Cohu (COHU) 10-K 17 Feb 23 2022 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Feb. 08, 2023	Jun. 25, 2022
Document Information [Line Items]
Entity Central Index Key	0000021535
Entity Registrant Name	COHU INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	1-4298
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-1934119
Entity Address, Address Line One	12367 Crosthwaite Circle
Entity Address, City or Town	Poway
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92064-6817
City Area Code	858
Local Phone Number	848-8100
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	COHU
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,286,100,000
Entity Common Stock, Shares Outstanding		47,282,254
Auditor Name	Ernst & Young LLP
Auditor Location	San Diego, California
Auditor Firm ID	42

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Current assets:
Cash and cash equivalents	$ 242,341	$ 290,201
Short-term investments	143,235	89,704
Accounts receivable, net	176,148	192,873
Inventories	170,141	161,053
Prepaid expenses	24,017	16,194
Other current assets	8,969	768
Total current assets	764,851	750,793
Property, plant and equipment, net	65,011	63,957
Goodwill	213,539	219,791
Intangible assets, net	140,104	177,320
Other assets	21,105	22,123
Operating lease right of use assets	22,804	25,060
Assets, Total	1,227,414	1,259,044
Current liabilities:
Short-term borrowings	1,907	3,059
Current installments of long-term debt	4,404	11,338
Accounts payable	51,763	85,230
Customer advances	6,886	7,300
Accrued compensation and benefits	38,348	39,835
Accrued warranty	5,614	6,614
Deferred profit	8,022	13,208
Income taxes payable	26,648	6,873
Other accrued liabilities	17,280	19,002
Total current liabilities	160,872	192,459
Other accrued liabilities	7,620	8,588
Noncurrent income tax liabilities	6,486	6,138
Accrued retirement benefits	10,363	18,037
Deferred income taxes	21,359	25,887
Long-term debt	72,664	103,393
Long-term lease liabilities	19,209	22,040
Stockholders' equity:
Preferred stock, $1 par value; 1,000 shares authorized, none issued	0	0
Common stock, $1 par value; 90,000 shares authorized, 49,276 shares issued and outstanding in 2022 and 48,756 shares in 2021	49,276	48,756
Paid-in capital	687,218	674,777
Treasury stock, at cost; 1,767 shares in 2022 and 207 shares in 2021	(58,043)	(7,324)
Retained earnings	290,402	193,555
Accumulated other comprehensive loss	(40,012)	(27,262)
Total stockholders' equity	928,841	882,502
Liabilities and Equity, Total	$ 1,227,414	$ 1,259,044

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2022	Dec. 25, 2021
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, shares issued (in shares)	49,276,000	48,756,000
Common stock, shares outstanding (in shares)	49,276,000	48,756,000
Treasury stock, shares (in shares)	1,767,000	207,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Net sales		$ 812,775	$ 887,214	$ 636,007
Cost and expenses:
Cost of sales (1)	[1]	429,449	500,253	364,225
Research and development		92,589	91,963	86,151
Selling, general and administrative		131,390	126,958	129,248
Amortization of cost		33,185	35,414	38,746
Gain on sale of PCB Test business (2)	[2]	0	(70,815)	0
Restructuring charges (Note 4)		605	1,823	7,623
Impairment charges		0	100	11,249
Gain on sale of facilities		0	0	(4,495)
Costs and Expenses, Total		687,218	685,696	632,747
Income from operations		125,557	201,518	3,260
Other (expense) income:
Interest expense		(4,177)	(6,413)	(13,759)
Interest income		4,012	239	224
Foreign transaction gain (loss)		1,635	411	(3,170)
Gain (loss) on extinguishment of debt		(312)	(3,411)	268
Total		126,715	192,344	(13,177)
Income tax provision		29,868	25,019	666
Income (loss) from continuing operations		96,847	167,325	(13,843)
Income from discontinued operations, net of tax		0	0	42
Net income (loss)		$ 96,847	$ 167,325	$ (13,801)
Basic:
Income (loss) from continuing operations (in dollars per share)		$ 2.01	$ 3.53	$ (0.33)
Income from discontinued operations (in dollars per share)		0	0	0
Net income (loss) (in dollars per share)		2.01	3.53	(0.33)
Diluted:
Income (loss) from continuing operations (in dollars per share)		1.98	3.45	(0.33)
Income from discontinued operations (in dollars per share)		0	0	0
Net income (loss) (in dollars per share)		$ 1.98	$ 3.45	$ (0.33)
Weighted average shares used in computing income (loss) per share:
Basic (in shares)		48,178	47,409	41,854
Diluted (in shares)		48,799	48,460	41,854
[1]Excludes amortization of $26,023, $27,508, and $29,510 for the years ended December 31, 2022, December 25, 2021, and December 26, 2020, respectively.[2]On June 24, 2021 we completed the divestment of our PCB Test business. The divestment of this business did not qualify for presentation as discontinued operations and the results of the PCB Test business are included in continuing operations for all periods presented. See Note 14, “Business Divestitures and Discontinued Operations” for additional information on this transaction and financial statement presentation.

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Amortization of cost	$ 33,185	$ 35,414	$ 38,746
Cost of Sales [Member]
Amortization of cost	$ 26,023	$ 27,508	$ 29,510

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Net income (loss)	$ 96,847	$ 167,325	$ (13,801)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	(17,950)	(22,956)	27,321
Adjustments related to postretirement benefits, net of tax	5,894	2,602	2,383
Change in unrealized gain/loss on investments	(694)	(67)	0
Reclassification due to sale of PBC Test Business, net of tax	0	(2,515)	0
Other comprehensive income (loss), net of tax	(12,750)	(22,936)	29,704
Comprehensive income	$ 84,097	$ 144,389	$ 15,903

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance at Dec. 28, 2019	$ 41,395	$ 433,190	$ 42,517	$ (34,030)	$ 0	$ 483,072
Net income (loss)	0	0	(13,801)	0	0	(13,801)
Changes in cumulative translation adjustment	0	0	0	27,321	0	27,321
Adjustments related to postretirement benefits, net of tax	0	0	0	2,383	0	2,383
Cash dividends	0	0	(2,486)	0	0	(2,486)
Exercise of stock options	101	1,001	0	0	0	1,102
Shares issued under ESPP	243	3,026	0	0	0	3,269
Shares issued for restricted stock units vested	660	(660)	0	0	0	0
Repurchase and retirement of stock	(209)	(2,597)	0	0	0	(2,806)
Share-based compensation expense	0	14,234	0	0	0	14,234
Changes in unrealized gains and losses on investments, net of tax						0
Balance at Dec. 26, 2020	42,190	448,194	26,230	(4,326)	0	512,288
Net income (loss)	0	0	167,325	0	0	167,325
Changes in cumulative translation adjustment	0	0	0	(22,956)	0	(22,956)
Adjustments related to postretirement benefits, net of tax	0	0	0	2,602	0	2,602
Exercise of stock options	250	2,260	0	0	0	2,510
Shares issued under ESPP	161	3,403	0	0	0	3,564
Shares issued for restricted stock units vested	704	(704)	0	0	0	0
Repurchase and retirement of stock	(242)	(10,222)	0	0	0	(10,464)
Share-based compensation expense	0	14,420	0	0	0	14,420
Common stock repurchases	0	0	0	0	(7,324)	(7,324)
Changes in unrealized gains and losses on investments, net of tax	0	0	0	(67)	0	(67)
Impact of sale of PCB Test business	0	0	0	(2,515)	0	(2,515)
Sale of common stock, net of issuance costs	5,693	217,426	0	0	0	223,119
Balance at Dec. 25, 2021	48,756	674,777	193,555	(27,262)	(7,324)	882,502
Net income (loss)	0	0	96,847	0	0	96,847
Changes in cumulative translation adjustment	0	0	0	(17,950)	0	(17,950)
Adjustments related to postretirement benefits, net of tax	0	0	0	5,894	0	5,894
Exercise of stock options	12	105	0	0	0	117
Shares issued under ESPP	161	3,470	0	0	0	3,631
Shares issued for restricted stock units vested	529	(529)	0	0	0	0
Repurchase and retirement of stock	(182)	(5,523)	0	0	0	(5,705)
Share-based compensation expense	0	14,918	0	0	0	14,918
Common stock repurchases	0	0	0	0	(50,719)	(50,719)
Changes in unrealized gains and losses on investments, net of tax	0	0	0	(694)	0	(694)
Balance at Dec. 31, 2022	$ 49,276	$ 687,218	$ 290,402	$ (40,012)	$ (58,043)	$ 928,841

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parentheticals)	12 Months Ended
	Dec. 26, 2020 $ / shares
Cash dividend, per share (in dollars per share)	$ 0.06

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Cash flows from operating activities:
Net income (loss)	$ 96,847	$ 167,325	$ (13,801)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
(Gain) loss on business divestitures	0	(70,815)	(35)
Interest capitalized associated with cloud computing implementation	(199)	(91)	(124)
Net accretion on investments	(859)	0	0
(Gain) loss on extinguishment of debt	312	3,411	(268)
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	100	11,249
Depreciation and amortization	46,016	48,568	52,746
Share-based compensation expense	14,918	13,792	14,234
Inventory related charges	6,725	6,523	3,731
Amortization of debt discounts and issuance costs	315	643	1,177
Accrued retiree benefits	(1,589)	(500)	1,675
Deferred income taxes	(3,504)	953	(5,305)
Changes in other assets	(3,230)	(1,652)	285
Amortization of cloud-based software implementation costs	2,060	1,644	1,191
(Gain) loss from sale of property, plant and equipment	(203)	1	(4,170)
Changes in other accrued liabilities	(943)	(416)	91
Operating lease right-of-use assets	5,139	6,746	6,831
Changes in current assets and liabilities, excluding effects from divestitures:
Customer advances	(184)	(4,090)	2,188
Accounts receivable	12,451	(59,123)	(20,210)
Inventories	(18,508)	(35,864)	(14,982)
Accrued compensation, warranty and other liabilities	(4,007)	225	4,678
Accounts payable	(33,130)	17,316	15,058
Deferred profit	(5,014)	4,732	871
Other current assets	(16,202)	1,709	1,150
Income taxes payable	20,908	3,444	(2,089)
Current and long-term operating lease liabilities	(5,258)	(6,666)	(6,291)
Net cash provided by operating activities	112,861	97,915	49,880
Cash flows from investing activities:
Purchases of property, plant and equipment	(14,770)	(12,000)	(18,660)
Net cash received from sale of land, facility and assets	349	157	17,025
Purchases of short-term investments	(208,856)	(204,699)	(19,703)
Sales and maturities of short-term investments	155,406	135,549	0
Cash received from disposition of business, net of cash paid	0	120,886	2,975
Net cash provided by (used in) investing activities	(67,871)	39,893	(18,363)
Cash flows from financing activities:
Cash dividends paid	0	0	(4,971)
Proceeds from revolving line of credit and construction loans	0	1,376	5,878
Repayments of long-term debt	(38,226)	(206,069)	(41,056)
Net issuance (repurchases) of stock, including awards settled in cash	(1,957)	(4,390)	2,077
Payments on current and long-term finance lease liabilities	(167)	(186)	(146)
Acquisition of treasury stock	(50,719)	(7,324)	0
Proceeds received from issuance of common stock, net of fees	0	223,119	0
Net cash provided by (used in) financing activities	(91,069)	6,526	(38,218)
Effect of exchange rate changes on cash and cash equivalents	(1,781)	(3,491)	129
Net increase (decrease) in cash and cash equivalents	(47,860)	140,843	(6,572)
Cash and cash equivalents at beginning of year	290,201	149,358	155,930
Cash and cash equivalents at end of year	242,341	290,201	149,358
Supplemental disclosure of cash flow information:
Cash paid for income taxes	23,123	22,717	5,772
Cash paid for interest	3,443	6,253	16,324
Property, plant and equipment purchases included in accounts payable	152	624	1,063
Inventory capitalized as capital assets	$ 2,529	$ 1,635	$ 1,050

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Significant Accounting Policies [Text Block]	1. Summary of Significant Accounting Policies Basis of Presentation 810, Consolidation 810” The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. Our fiscal years are based on a 52 53 December. December 31, 2022, 53 December 25, 2021, December 26, 2020, 52 Business Divestitures and Discontinued Operations June 24, 2021, February 2020, not 14, Business Divestitures and Discontinued Operations Income (Loss) Per Share December 31, 2022, December 25, 2021 December 26, 2020, The following table reconciles the denominators used in computing basic and diluted income (loss) per share: (in thousands) 2022 2021 2020 Weighted average common shares outstanding 48,178 47,409 41,854 Effect of dilutive stock options and restricted stock units 621 1,051 - 48,799 48,460 41,854 For the year ended December 26, 2020, Cash, Cash Equivalents and Short-term Investments three three 12 one Fair Value of Financial Instruments Concentration of Credit Risk one Our trade accounts receivable are presented net of an allowance for credit losses, which is determined in accordance with the guidance provided by ASC Topic 326, Financial Instruments-Credit Losses 326” December 31, 2022, may Inventories first first 2022 2021, 2020 Inventories by category were as follows (in thousands) December 31, December 25, 2022 2021 Raw materials and purchased parts $ 106,041 $ 92,798 Work in process 36,024 40,732 Finished goods 28,076 27,523 Total inventories $ 170,141 $ 161,053 Gain on Sale of Facilities 4, 2020, Property, Plant and Equipment thirty forty five fifteen three ten not Property, plant and equipment, at cost, consisted of the following (in thousands) December 31, December 25, 2022 2021 Land and land improvements $ 7,066 $ 7,703 Buildings and building improvements 31,161 31,711 Machinery and equipment 105,109 95,542 143,336 134,956 Less accumulated depreciation and amortization (78,325 ) (70,999 ) Property, plant and equipment, net $ 65,011 $ 63,957 Depreciation expense was $12.8 million in 2022, 2021 2020. Cloud Computing Implementation Costs 350, Intangibles Goodwill and Other 350” Total unamortized capitalized cloud computing implementation costs totaled $14.7 million and $13.5 million at December 31, 2022 December 25, 2021, fourth 2022 seven December 31, 2022 December 25, 2021, Segment Information 280, Segment Reporting 280” three 280 one June 24, 2021, two Goodwill, Purchased Intangible Assets and Other Long-lived Assets may not first second not 50/50 We conduct our annual impairment test as of October 1st October 1, 2022, may December 31, 2022, not not. may Long-lived assets, other than goodwill, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets might not may not not Product Warranty Income Taxes not 50 not not no We recognized deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established for those jurisdictions when necessary to reduce deferred tax assets to the amounts that are more likely than not Contingencies and Litigation Leases Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at the adoption date of January 1, 2019, not The operating lease ROU asset also includes any lease payments made, lease incentives, favorable and unfavorable lease terms recognized in business acquisitions and excludes initial direct costs incurred and variable lease payments. Variable lease payments include estimated payments that are subject to reconciliations throughout the lease term, increases or decreases in the contractual rent payments, as a result of changes in indices or interest rates and tax payments that are based on prevailing rates. Our lease terms may Leases with an initial term of 12 not We sublease certain leased assets to third None Revenue Recognition not Revenue for established products that have previously satisfied a customer’s acceptance requirements is generally recognized upon shipment. In cases where a prior history of customer acceptance cannot be demonstrated or from sales where customer payment dates are not Certain of our equipment sales have multiple performance obligations. These arrangements involve the delivery or performance of multiple performance obligations, and transfer of control of performance obligations may Unsatisfied performance obligations primarily represent contracts for products with future delivery dates. At December 31, 2022 December 25, 2021, one 606, not one We generally sell our equipment with a product warranty. The product warranty provides assurance to customers that delivered products are as specified in the contract (an “assurance-type warranty”). Therefore, we account for such product warranties under ASC Topic 460, Guarantees 460” not The transaction price reflects our expectations about the consideration we will be entitled to receive from the customer and may not not Our contracts are typically less than one 606 one Accounts receivable represents our unconditional right to receive consideration from our customers. Payments terms do not one not On shipments where sales are not December 31, 2022, one December 25, 2021, one Disaggregated net sales by segment are as follows: (in thousands) 2022 2021 2020 Systems-Semiconductor Test & Inspection $ 474,655 $ 541,589 $ 317,821 Non-systems-Semiconductor Test & Inspection 338,120 318,865 267,419 Systems-PCB Test - 17,831 33,293 Non-systems-PCB Test - 8,929 17,474 Net sales $ 812,775 $ 887,214 $ 636,007 Advertising Costs not Restructuring Costs one 420, Exit or Disposal Cost Obligations 420” . 420 712, Nonretirement Postemployment Benefits. Debt Issuance Costs December 31, 2022, December 25, 2021 December 26, 2020, Share-based Compensation Foreign Remeasurement and Currency Translation December 31, 2022 December 25, 2021, $0.4 December 26, 2020, $3.2 Certain of our foreign subsidiaries have designated the local currency as their functional currency and, as a result, their assets and liabilities are translated at the rate of exchange at the balance sheet date, while revenue and expenses are translated using the average exchange rate for the period. Cumulative translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity. Foreign Exchange Derivative Contracts fourth 2020, 7, Derivative Financial Instruments Accumulated Other Comprehensive Loss December 31, 2022, December 25, 2021, December 25, 2021 December 31, 2022 December 25, 2021 December 31, 2022, 2022 2021 not 15, Accumulated Other Comprehensive Income Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements not Recently Issued Accounting Pronouncements March 2020, 2020 04, Reference Rate Reform (Topic 848 may 2020 04 may December 31, 2022. December 2022, 2022 06, Reference Rate Reform (Topic 848 848 848 December 31, 2022 December 31, 2024. not All other newly issued accounting pronouncements not not

Note 2 - Goodwill and Purchased

Note 2 - Goodwill and Purchased Intangible Assets	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	2. Goodwill and Purchased Intangible Assets Changes in the carrying value of our goodwill during the years ended December 31, 2022, December 25, 2021, in thousands Semiconductor Test & Inspection PCB Test Total Goodwill Balance December 26, 2020 $ 230,724 $ 21,580 $ 252,304 Sale of PCB Test Business (1) - (21,899 ) (21,899 ) Impact of currency exchange (10,933 ) 319 (10,614 ) Balance December 25, 2021 219,791 - 219,791 Impact of currency exchange (6,252 ) - (6,252 ) Balance December 31, 2022 $ 213,539 $ - $ 213,539 ( 1 On June 24, 2021, 14, Business Divestitures and Discontinued Operations Purchased intangible assets, subject to amortization, are as follows (in thousands) December 31, 2022 December 25, 2021 Remaining Gross Carrying Accumulated Useful Life Gross Carrying Accumulated Amount Amortization (years) Amount Amortization Developed technology $ 224,253 $ 128,938 3.6 $ 229,131 $ 104,855 Customer relationships 64,632 31,015 6.5 65,916 26,189 Trade names 20,461 9,397 6.4 20,877 7,714 Covenant not-to-compete 269 161 4.0 308 154 $ 309,615 $ 169,511 $ 316,232 $ 138,912 Changes in the carrying values of purchased intangible assets presented above are a result of the impact of fluctuation in currency exchange rates and the sale of our PCB Test business. We evaluate goodwill and other indefinite-lived intangible assets for impairment annually and when an event occurs, or circumstances change that indicate that the carrying value may not October 1, 2022, first fourth may During the fourth 2021 Amortization expense related to purchased intangible assets was approximately $33.2 million in 2022, 2021 2020. December 31, 2022, 2023 2024 2025 2026 2027

Note 3 - Borrowings and Credit

Note 3 - Borrowings and Credit Agreements	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Debt Disclosure [Text Block]	3. Borrowings and Credit Agreements The following table is a summary of our borrowings as of December 31, 2022 December 25, 2021: Fiscal year ended (in thousands) December 31, 2022 December 25, 2021 Bank term loan under credit agreement $ 66,952 $ 103,130 Bank term loans-Kita 2,466 3,070 Construction loan-Cohu GmbH 8,414 10,045 Lines of credit 1,907 3,059 Total debt 79,739 119,304 Less: financing fees and discount (764 ) (1,514 ) Less: current portion (6,311 ) (14,397 ) Total long-term debt $ 72,664 $ 103,393 The debt principal payments, excluding financing lease obligations, for the next five (in thousands) 2023 $ 6,574 2024 4,672 2025 61,130 2026 1,183 2027 1,189 Thereafter 4,991 Total $ 79,739 Credit Agreement On October 1, 2018, October 1, 2025. December 31, 2022, December 25, 2021, December 31, 2022, December 31, 2022 2 Under the terms of the Credit Agreement, the lender may December 31, 2022, no During 2022 2021 December 31, 2022. Kita Term Loans We have a series of term loans with Japanese financial institutions primarily related to the expansion of our facility in Osaka, Japan. The loans are collateralized by the facility and land, carry interest rates ranging from 0.05% to 0.43%, and expire at various dates through 2034. December 31, 2022, December 25, 2021, December 31, 2022. The term loans are denominated in Japanese Yen and, as a result, amounts disclosed herein will fluctuate because of changes in currency exchange rates. Construction Loans In July 2019 June 2020, one €10.1 The first € 3.4 September 2029. second € 5.2 April 2027. January 2034. third €0.9 May 2030. At December 31, 2022, December 25, 2021, December 31, 2022. Lines of Credit As a result of our acquisition of Kita, we assumed a series of revolving credit facilities with various financial institutions in Japan. The credit facilities renew monthly and provide Kita with access to working capital totaling up to 960 million Japanese Yen of which 250 million Japanese Yen is drawn. At December 31, 2022, The revolving lines of credit are denominated in Japanese Yen and, as a result, amounts disclosed herein will fluctuate because of changes in currency exchange rates. Our wholly owned subsidiary in Switzerland has one December 31, 2022, December 25, 2021,

Note 4 - Restructuring Charges

Note 4 - Restructuring Charges	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	4. Restructuring Charges Subsequent to the acquisition of Xcerra, during the fourth 2018, 2019. In 2019, fourth 2020 As a result of the activities described above, we recognized total pretax charges of $0.2 million, $1.3 million and $11.4 million for the years ended December 31, 2022, December 25, 2021 December 26, 2020, 420. All costs of the Integration Program were, and are expected to be, incurred by our Semiconductor Test & Inspection segment. Charges related to the Integration Program for the years ended December 31, 2022, December 25, 2021 December 26, 2020, (in thousands): (in thousands) 2022 2021 2020 Employee severance costs $ (8 ) $ 1,161 $ 6,485 Inventory related charges (adjustments) (454 ) (558 ) 3,731 Other restructuring costs 613 662 1,138 Total $ 151 $ 1,265 $ 11,354 Costs associated with restructuring activities are presented in our consolidated statements of operations as restructuring charges, except for certain costs associated with inventory charges related to the decision to end manufacturing of certain of Xcerra’s semiconductor test handler products, which are classified within cost of sales. Other restructuring costs include expenses for professional fees associated with employee severance, impairments of fixed assets and facility closure costs. The following table summarizes the activity within the restructuring related accounts for the Integration Program during the years ended December 31, 2022 December 25, 2021 (in thousands) Employee Severance Other Exit Costs Total Balance, December 26, 2020 $ 5,826 - 5,826 Costs accrued 1,161 662 1,823 Amounts paid or charged (6,545 ) (662 ) (7,207 ) Impact of currency exchange (94 ) - (94 ) Balance, December 25, 2021 348 - 348 Costs accrued (8 ) 613 605 Amounts paid or charged (331 ) (613 ) (944 ) Impact of currency exchange (9 ) - (9 ) Balance, December 31, 2022 $ - $ - $ - At December 31, 2022, no

Note 5 - Financial Instruments

Note 5 - Financial Instruments Measured at Fair Value	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]	5. Financial Instruments Measured at Fair Value Our cash, cash equivalents, and short-term investments consisted primarily of cash and other investment grade securities. We do not Gains and losses on investments are calculated using the specific-identification method and are recognized during the period in which the investment is sold or when an investment experiences an other-than-temporary decline in value. Factors that could indicate an impairment exists include, but are not not Investments that we have classified as short-term, by security type, are as follows (in thousands) At December 31, 2022 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses (1) Value Corporate debt securities (2) $ 59,283 $ 30 $ 240 $ 59,073 U.S. treasury securities 34,614 1 418 34,197 Bank certificates of deposit 36,500 20 41 36,479 Asset-backed securities 12,727 10 79 12,658 Foreign government security 828 - - 828 $ 143,952 $ 61 $ 778 $ 143,235 At December 25, 2021 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses (1) Value Corporate debt securities (2) $ 84,060 $ 2 $ 31 $ 84,031 U.S. treasury securities 3,953 - 5 3,948 Bank certificates of deposit 800 - - 800 Foreign government security 925 - - 925 $ 89,738 $ 2 $ 36 $ 89,704 ( 1 As of December 31, 2022, December 25, 2021, ( 2 Corporate debt securities include investments in financial and other corporate institutions. No Effective maturities of short-term investments at December 31, 2022, Amortized Estimated (in thousands) Cost Fair Value Due in one year or less $ 112,956 $ 112,683 Due after one year through three years 30,996 30,552 $ 143,952 $ 143,235 Accounting standards pertaining to fair value measurements establish a three 1, 2, 3, no 1. The following table summarizes, by major security type, our financial instruments that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy (in thousands) Fair value measurements at December 31, 2022 using: Total estimated Level 1 Level 2 Level 3 fair value Cash $ 190,371 $ - $ - $ 190,371 Corporate debt securities - 69,753 - 69,753 Money market funds - 40,290 - 40,290 Bank certificates of deposit - 37,480 - 37,480 U.S. treasury securities - 34,196 - 34,196 Asset-backed securities - 12,658 - 12,658 Foreign government security - 828 - 828 $ 190,371 $ 195,205 $ - $ 385,576 Fair value measurements at December 25, 2021 using: Total estimated Level 1 Level 2 Level 3 fair value Cash $ 195,297 $ - $ - $ 195,297 Money market funds - 92,400 - 92,400 Corporate debt securities - 86,535 - 86,535 U.S. treasury securities - 3,948 - 3,948 Foreign government security - 925 - 925 Bank certificates of deposit - 800 - 800 $ 195,297 $ 184,608 $ - $ 379,905

Note 6 - Employee Benefit Plans

Note 6 - Employee Benefit Plans	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	6. Employee Benefit Plans Defined Contribution Retirement Plans 401 2022, 2021 2020 Defined Benefit Retirement Plans Net periodic benefit cost of the Swiss Plan was as follows: (in thousands) 2022 2021 2020 Service cost $ 954 $ 1,223 $ 1,310 Interest cost 56 61 67 Expected return on assets (128 ) (128 ) (200 ) Settlements (487 ) 72 292 Net periodic costs $ 395 $ 1,228 $ 1,469 The following table sets forth the projected benefit obligation, the fair value of plan assets, the funded status and the liability we have recorded in our consolidated balance sheets related to the Swiss Plan: (in thousands) 2022 2021 Change in projected benefit obligation: Benefit obligation at beginning of year $ (28,765 ) $ (31,039 ) Service cost (954 ) (1,223 ) Interest cost (56 ) (61 ) Actuarial gain 6,043 1,179 Participant contributions (1,459 ) (1,780 ) Benefits paid 378 436 Plan change 397 1,076 Settlements 2,426 1,653 Foreign currency exchange adjustment 362 994 Benefit obligation at end of year (21,628 ) (28,765 ) Change in plan assets: Fair value of plan assets at beginning of year 18,919 18,756 Return on assets, net of actuarial loss 119 207 Employer contributions 831 878 Participant contributions 1,459 1,780 Benefits paid (378 ) (436 ) Settlements (2,426 ) (1,653 ) Foreign currency exchange adjustment (113 ) (613 ) Fair value of plan assets at end of year 18,411 18,919 Net liability at end of year $ (3,217 ) $ (9,846 ) At December 31, 2022 December 25, 2021, December 31, 2022 December 25, 2021, Actuarial gains of $6.0 million and $1.2 million for the years ended December 31, 2022 December 25, 2021, Weighted-average actuarial assumptions used to determine the projected benefit obligation under the Swiss Plan are as follows: 2022 2021 Discount rate 2.3 % 0.2 % Compensation increase 3.0 % 1.5 % Weighted-average assumptions used to determine net periodic benefit cost of the Swiss Plan are as follows: 2022 2021 2020 Discount rate 2.3 % 0.2 % 0.2 % Rate of return on assets 1.8 % 0.7 % 1.0 % Compensation increase 3.0 % 1.1 % 1.1 % During 2023 2023 2024 2025 2026 2027 2032. As is customary with Swiss pension plans, the assets of the plan are invested in a collective fund with multiple employers. We have no 3 1 2 3 5, Financial Instruments Measured at Fair Value three We maintain other defined benefit plans for employees located outside the U.S. for which the majority of the obligations and net periodic benefit cost were determined to be immaterial for all periods presented. Retiree Medical Benefits 2022 2020 2021. no The weighted average discount rate used in determining the accumulated post-retirement benefit obligation was 4.9% in 2022, 2021 2020. 2023 65 65 65 65 2032 Contributions to the post-retirement health benefit plan are expected to total $0.1 million in 2023. 2023 2024 2025 2026 2027 2032. The following table sets forth the post-retirement benefit obligation, funded status and the liability we have recorded in our consolidated balance sheets: (in thousands) 2022 2021 Accumulated benefit obligation at beginning of year $ (2,097 ) $ (2,398 ) Interest cost (51 ) (49 ) Actuarial gain 382 241 Benefits paid 109 109 Accumulated benefit obligation at end of year (1,657 ) (2,097 ) Plan assets at end of year - - Funded status $ (1,657 ) $ (2,097 ) Deferred Compensation December 31, 2022, December 25, 2021, Employee Stock Purchase Plan 1997 may three 2022 160,855; 2021 161,351 2020 242,633. December 31, 2022, Employee Stock Benefit Plans 2005 “2005 may not December 31, 2022, 2005 Stock Options Under the 2005 may not one four one ten During 2022, 2021 2020 2022 2021 2020 (in thousands, except per share data) Shares Wt. Avg. Ex. Price Shares Wt. Avg. Ex. Price Shares Wt. Avg. Ex. Price Outstanding and exercisable, beginning of year 12 $ 9.44 262 $ 10.01 363 $ 10.27 Exercised (12 ) $ 9.44 (250 ) $ 10.03 (101 ) $ 10.95 Outstanding and exercisable, end of year - $ - 12 $ 9.44 262 $ 10.01 The aggregate intrinsic value of options exercised was $0.2 million in 2022, 2021, 2020. December 31, 2022, no Restricted Stock Units Under our equity incentive plans, restricted stock units (“RSUs”) may one two four not not not December 31, 2022. Restricted stock unit activity under our share-based compensation plans was as follows: 2022 2021 2020 (in thousands, except per share data) Units Wt. Avg. Fair Value Units Wt. Avg. Fair Value Units Wt. Avg. Fair Value Outstanding, beginning of year 1,058 $ 21.16 1,414 $ 15.16 1,328 $ 17.05 Granted 431 $ 27.74 270 $ 41.66 779 $ 14.02 Released (474 ) $ 19.94 (579 ) $ 16.23 (621 ) $ 17.48 Cancelled (46 ) $ 24.33 (47 ) $ 18.96 (72 ) $ 17.59 Outstanding, end of year 969 $ 24.55 1,058 $ 21.16 1,414 $ 15.16 Equity-Based Performance Stock Units We grant performance stock units (“PSUs”) to certain senior executives as a part of our long-term equity compensation program. The number of shares of common stock that will ultimately be issued to settle PSUs granted ranges from 0% to 200% of the number granted and is determined based on certain performance criteria over a three third We estimated the fair value of the PSUs using a Monte Carlo simulation model on the date of grant. Compensation expense is recognized over the requisite service period. New shares of our common stock will be issued on the date the PSUs vest net of the minimum statutory tax withholding requirements to be paid by us on behalf of our employees. PSU activity under our share-based compensation plans was as follows: 2022 2021 2020 (in thousands, except per share data) Units Wt. Avg. Fair Value Units Wt. Avg. Fair Value Units Wt. Avg. Fair Value Outstanding, beginning of year 384 $ 22.22 425 $ 15.51 364 $ 18.72 Granted 151 $ 33.22 93 $ 51.43 200 $ 13.18 Released (55 ) $ 14.11 (125 ) $ 21.77 (39 ) $ 21.40 Cancelled (77 ) $ 15.94 (9 ) $ 14.04 (100 ) $ 20.25 Outstanding, end of year 403 $ 28.64 384 $ 22.22 425 $ 15.51 Share-based Compensation May 5, 2020. 2022, 2021 2020 The following weighted average assumptions were used to value share-based awards granted: Employee Stock Purchase Plan 2022 2021 2020 Dividend yield 0.0 % 0.0 % 0.5 % Expected volatility 45.6 % 58.3 % 67.1 % Risk-free interest rate 1.2 % 0.1 % 1.1 % Expected term (years) 0.5 0.5 0.5 Weighted-average grant date fair value per share $ 8.79 $ 9.42 $ 6.01 Restricted Stock Units 2022 2021 2020 Dividend yield 0.0 % 0.0 % 0.0 % Reported share-based compensation is classified in the consolidated financial statements as follows: (in thousands) 2022 2021 2020 Cost of sales $ 646 $ 828 $ 893 Research and development 3,100 3,017 3,245 Selling, general and administrative 11,172 9,947 10,096 Share-based compensation of continuing operations 14,918 13,792 14,234 Income tax benefit (4,004 ) (722 ) (963 ) Total share-based compensation, net of tax $ 10,914 $ 13,070 $ 13,271 We account for forfeitures of plan-based awards as they occur. At December 31, 2022,

Note 7 - Derivative Financial I

Note 7 - Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	7. Derivative Financial Instruments Foreign Exchange Derivative Contracts We operate and sell our products in various global markets and, as a result, we are exposed to changes in foreign currency exchange rates. In the fourth 2020, We do not not The fair value of our foreign exchange derivative contracts was determined based on current foreign currency exchange rates and forward points. All our foreign exchange derivative contracts outstanding at December 31, 2022 first 2023. The following table provides information about our foreign currency forward contracts outstanding as of December 31, 2022 (in thousands) Currency Contract Position Contract Amount (Local Currency) Contract Amount (U.S. Dollars) Euro Buy 81,677 $ 87,300 Swiss Franc Buy 20,714 22,500 $ 109,800 Our foreign currency contracts are classified within Level 2 December 31, 2022 The location and amount of gains (losses) related to non-designated derivative instruments in the consolidated statements of operations were as follows (in thousands) Derivatives Not Designated Location of Gain (Loss) Fiscal Year as Hedging Instruments Recognized on Derivatives 2022 2021 2020 Foreign exchange forward contracts Foreign transaction gain (loss) $ (5,356 ) $ (3,428 ) $ 756

Note 8 - Equity

Note 8 - Equity	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	8. Equity Common Stock Issuance On March 8, 2021, 30 March 11, 2021. Share Repurchase Program On October 28, 2021, October 25, 2022, November 2, 2021 no may may 10b5 1 December 31, 2022, December 25, 2021, December 31, 2022, may Common Stock On May 4, 2022, May 5, 2022,

Note 9 - Income Taxes

Note 9 - Income Taxes	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Income Tax Disclosure [Text Block]	9. Income Taxes Significant components of the provision (benefit) for income taxes for continuing operations are as follows: (in thousands) 2022 2021 2020 Current: U.S. Federal $ 1,609 $ 1,103 $ - U.S. State 456 101 21 Foreign 31,307 22,862 5,950 Total current 33,372 24,066 5,971 Deferred: U.S. Federal (9 ) 5 8 Foreign (3,495 ) 948 (5,313 ) Total deferred (3,504 ) 953 (5,305 ) $ 29,868 $ 25,019 $ 666 Income (loss) before income taxes from continuing operations consisted of the following: (in thousands) 2022 2021 2020 U.S. $ 9,180 $ 30,588 $ (25,005 ) Foreign 117,535 161,756 11,828 Total $ 126,715 $ 192,344 $ (13,177 ) Deferred tax effects Except for working capital requirements in certain foreign jurisdictions, we provide for all taxes, including withholding and other residual taxes, related to unremitted earnings of our foreign subsidiaries. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting and tax purposes. Significant components of our deferred tax assets and liabilities were as follows: (in thousands) 2022 2021 Deferred tax assets: Inventory, receivable and warranty reserves $ 13,599 $ 12,166 Net operating loss carryforwards 39,545 44,806 Tax credit carryforwards 29,646 31,264 Capitalized R&D 19,819 8,728 Accrued employee benefits 4,416 5,695 Stock-based compensation 2,990 2,222 Lease liabilities 3,965 4,500 Other 472 2,674 Gross deferred tax assets 114,452 112,055 Less valuation allowance (89,234 ) (76,250 ) Total deferred tax assets 25,218 35,805 Deferred tax liabilities: Intangible assets and other acquisition basis differences 38,921 48,657 Operating lease right-of-use assets 3,573 4,066 Unremitted earnings of foreign subsidiaries 153 4,207 Total deferred tax liabilities 42,647 56,930 Net deferred tax liabilities $ (17,429 ) $ (21,125 ) The components of total net deferred tax assets (liabilities), net of valuation allowances, as shown in our consolidated balance sheets are as follows: (in thousands) 2022 2021 Other assets (long-term) $ 3,930 $ 4,762 Long-term deferred income tax liabilities (21,359 ) (25,887 ) Net deferred tax liabilities $ (17,429 ) $ (21,125 ) Companies are required to assess whether a valuation allowance should be recorded against their deferred tax assets (“DTAs”) based on the consideration of all available evidence, using a “more likely than not” four 1 2 3 4 In assessing whether a valuation allowance is required, significant weight is to be given to evidence that can be objectively verified. We have evaluated our DTAs each reporting period, including an assessment of taxable income in prior carryback years, future reversals of existing taxable temporary differences, future taxable income exclusive of reversing temporary differences and carryforwards, and prudent and feasible tax planning strategies that we would be willing to undertake to prevent a deferred tax asset from otherwise expiring. The assessment regarding whether a valuation allowance is required or whether a change in judgement regarding the valuation allowance has occurred also considers all available positive and negative evidence, including but not • Nature, frequency, and severity of cumulative losses in recent years • Duration of statutory carryforward and carryback periods • Statutory limitations against utilization of tax attribute carryforwards against taxable income • Historical experience with tax attributes expiring unused • Near- and medium-term financial outlook The weight given to the positive and negative evidence is commensurate with the extent to which the evidence may not two The evaluation of deferred tax assets requires judgment in assessing the likely future tax consequences of events recognized in the financial statements or tax returns and future profitability. The recognition of deferred tax assets represents our best estimate of those future events. Changes in the current estimates, due to unanticipated events or otherwise, could have a material effect on our results of operations and financial condition. In certain tax jurisdictions, our analysis indicates that it has cumulative losses in recent years. This is considered significant negative evidence, which is objective and veritable and, therefore, difficult to overcome. However, the cumulative loss position is not Our valuation allowance on our DTAs at December 31, 2022, December 25, 2021, not The reconciliation of income tax computed at the U.S. federal statutory tax rate to the provision (benefit) for income taxes for continuing operations is as follows: (in thousands) 2022 2021 2020 Tax provision at U.S. 21 $ 26,610 $ 40,392 $ (2,757 ) State income taxes, net of federal tax benefit (1,535 ) 2,246 (1,160 ) Settlements, adjustments and releases from statute expirations 348 (787 ) (118 ) Federal R&D credits (1,679 ) (943 ) (46 ) Stock-based compensation (572 ) (4,802 ) 727 Excess executive compensation 946 1,608 491 Change in valuation allowance 13,307 (9,882 ) (1,691 ) Exemption of PTG gain - (12,378 ) - Dividend, net of foreign tax credits 13 693 1,224 GILTI, net of foreign tax credits 3,458 9,343 4,191 Foreign rate differential (6,131 ) (1,023 ) (1,512 ) Other, net (4,897 ) 552 1,317 $ 29,868 $ 25,019 $ 666 An accounting policy may At December 31, 2022, 2023 2041 no December 31, 2022 2023 2041 no 382 383 no three December 31, 2022. We have certain tax holidays with respect to our operations in Malaysia and the Philippines. These holidays require compliance with certain conditions and expire at various dates through 2027. 2022 2021, 2020. A reconciliation of our gross unrecognized tax benefits, excluding accrued interest and penalties, is as follows: (in thousands) 2022 2021 2020 Balance at beginning of year $ 33,391 $ 33,696 $ 34,740 Additions for tax positions of current year 910 686 817 Reductions for tax positions of prior years (428 ) (83 ) (425 ) Reductions due to lapse of the statute of limitations (354 ) (1,012 ) (304 ) Reductions due to settlements - - (1,134 ) Foreign exchange rate impact (151 ) 104 2 Balance at end of year $ 33,368 $ 33,391 $ 33,696 If the unrecognized tax benefits at December 31, 2022 December 25, 2021 December 26, 2020) We recognize interest and penalties related to unrecognized tax benefits in income tax expense. Cohu had approximately $0.6 million and $0.8 million accrued for the payment of interest and penalties at December 31, 2022, December 25, 2021, 2022, 2021 2020. Our U.S. federal and state income tax returns for years after 2018 2017, four ten We conduct business globally and as a result, Cohu or one

Note 10 - Segment and Geographi

Note 10 - Segment and Geographic Information	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	10. Segment and Geographic Information We applied the provisions of ASC 280, three 280 one December 31, 2022, twelve December 31, 2022, June 24, 2021, two (in thousands) 2021 2020 Net sales by segment: Semiconductor Test & Inspection $ 860,454 $ 585,240 PCB Test 26,760 50,767 Total consolidated net sales for reportable segments $ 887,214 $ 636,007 Segment profit (loss) before tax: Semiconductor Test & Inspection $ 138,026 $ (2,497 ) PCB Test 3,907 6,971 Profit for reportable segments 141,933 4,474 Other unallocated amounts: Corporate expenses (10,819 ) (4,384 ) Gain on sale of PCB Test business 70,815 - Interest expense (6,413 ) (13,759 ) Interest income 239 224 Gain on extinguishment of debt (3,411 ) 268 Profit (loss) from continuing operations before taxes $ 192,344 $ (13,177 ) (in thousands) 2021 2020 Depreciation and amortization by segment deducted in arriving at profit (loss): Semiconductor Test & Inspection $ 48,129 $ 51,548 PCB Test 439 1,198 Total depreciation and amortization $ 48,568 $ 52,746 Capital expenditures by segment: Semiconductor Test & Inspection $ 11,954 $ 18,616 PCB Test 46 44 Total consolidated capital expenditures $ 12,000 $ 18,660 (in thousands) 2020 Total assets by segment: Semiconductor Test & Inspection $ 968,028 PCB Test 66,826 Total assets for reportable segments 1,034,854 Corporate, principally cash and investments 55,492 Discontinued operations - Total consolidated assets $ 1,090,346 During the last three 10% 2022 2021 2020 Analog Devices * 14.1 % * * Less than 10% On June 24, 2021, no 10% December 25, 2021 December 26, 2020. Net sales to customers, attributed to countries based on product shipment destination, were as follows: (in thousands) 2022 2021 2020 China $ 146,227 $ 213,575 $ 143,360 Philippines 111,647 155,070 56,272 Malaysia 99,508 79,777 57,893 United States 79,093 77,495 108,694 Taiwan 59,835 88,152 83,685 Rest of the world 316,465 273,145 186,103 Total, net $ 812,775 $ 887,214 $ 636,007 Geographic location of our property, plant and equipment and other long-lived assets was as follows: (in thousands) 2022 2021 Property, plant and equipment: United States $ 18,419 $ 18,375 Germany 15,977 17,419 Philippines 14,706 10,384 Japan 9,316 11,156 Malaysia 4,300 4,082 Rest of the world 2,293 2,541 Total, net $ 65,011 $ 63,957 Goodwill and other intangible assets: Germany $ 158,401 $ 181,146 United States 131,068 150,477 Malaysia 43,571 43,611 Singapore 12,512 12,990 Switzerland 4,299 4,583 Japan 2,641 3,148 Rest of the world 1,151 1,156 Total, net $ 353,643 $ 397,111

Note 11 - Leases

Note 11 - Leases	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Lessee, Leases [Text Block]	11. Leases We lease certain of our facilities, equipment and vehicles under non-cancelable operating and finance leases. Leases with initial terms with 12 not Our leases have remaining lease terms ranging from 1 year to 35 years, some of which include one third Supplemental balance sheet information related to leases was as follows: December 31, December 25, (in thousands) Classification 2022 2021 Assets: Operating lease assets Operating lease right-of-use assets $ 22,804 $ 25,060 Finance lease assets Property, plant and equipment, net (1) 323 423 Total lease assets $ 23,127 $ 25,483 Liabilities: Current: Operating Other accrued liabilities $ 4,927 $ 4,886 Finance Other accrued liabilities 49 167 Noncurrent: Operating Long-term lease liabilities 19,185 21,977 Finance Long-term lease liabilities 24 63 Total lease liabilities $ 24,185 $ 27,093 Weighted-average remaining lease term (years): Operating leases 6.2 6.9 Finance leases 1.7 1.8 Weighted-average discount rate: Operating leases 6.2 % 6.3 % Finance leases 2.2 % 0.7 % ( 1 Finance lease assets are recorded net of accumulated amortization of $0.2 million and $0.1 million in 2022 2021, The components of lease expense were as follows: December 31, December 25, (in thousands) 2022 2021 Operating leases $ 6,698 $ 7,638 Variable lease expense 2,220 2,192 Short-term operating leases 4 69 Finance leases: Amortization of leased assets 88 86 Interest on lease liabilities 1 2 Sublease income (69 ) (81 ) Net lease cost $ 8,942 $ 9,906 Future minimum lease payments at December 31, 2022, Operating Finance (in thousands) leases leases Total 2023 $ 6,197 $ 50 $ 6,247 2024 5,848 11 5,859 2025 5,234 11 5,245 2026 2,849 3 2,852 2027 1,780 - 1,780 Thereafter 7,904 - 7,904 Total lease payments 29,812 75 29,887 Less: Interest (5,700 ) (2 ) (5,702 ) Present value of lease liabilities $ 24,112 $ 73 $ 24,185 Supplemental cash flow information related to leases was as follows: December 31, December 25, (in thousands) 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,716 $ 7,628 Operating cash flows from finance leases $ 1 $ 1 Financing cash flows from finance leases $ 167 $ 186 Leased assets obtained in exchange for new finance lease liabilities $ - $ 54 Leased assets obtained in exchange for new operating lease liabilities $ 2,874 $ 3,866

Note 12 - Commitments and Conti

Note 12 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	12. Commitments and Contingencies From time-to-time we are involved in various legal proceedings, examinations by various tax authorities and claims that have arisen in the ordinary course of our business. The outcome of any litigation is inherently uncertain. While there can be no not

Note 13 - Guarantees

Note 13 - Guarantees	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Guarantees [Text Block]	13. Guarantees Accrued Warranty Changes in accrued warranty during the three December 31, 2022, (in thousands) 2022 2021 2020 Beginning balance $ 7,691 $ 6,382 $ 6,155 Warranty accruals 8,897 13,389 6,173 Warranty payments (10,374 ) (11,135 ) (5,946 ) Warranty liability transferred - (945 ) - Ending balance $ 6,214 $ 7,691 $ 6,382 Accrued warranty amounts expected to be incurred after one December 31, 2022 December 25, 2021,

Note 14 - Business Divestitures

Note 14 - Business Divestitures and Discontinued Operations	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	14. Business Divestitures and Discontinued Operations PCB Test Equipment Business On June 24, 2021, no twelve December 25, 2021. We evaluated the guidance in ASC Topic 205 20, Presentation of Financial Statements Discontinued Operations not not not Fixtures Services Business ( “ FSG ” ) On October 1, 2018, not not October 1, 2018 We completed the sale of this business in February 2020 twelve December 26, 2020, Operating results of our discontinued operations are summarized as follows (in thousands) December 26, 2020 Net sales $ 432 Operating income $ 11 Gain on sale of FSG 35 Income before taxes 46 Income tax provision 4 Income, net of tax $ 42

Note 15 - Accumulated Other Com

Note 15 - Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	15. Accumulated Other Comprehensive Income (Loss) Components of other comprehensive income (loss), on an after-tax basis, were as follows: (in thousands) Before Tax amount Tax (Expense) Benefit Net of Tax Amount Year ended December 26, 2020 Foreign currency translation adjustments $ 27,321 $ - $ 27,321 Adjustments related to postretirement benefits 2,599 (216 ) 2,383 Other comprehensive income $ 29,920 $ (216 ) $ 29,704 Year ended December 25, 2021 Foreign currency translation adjustments $ (22,859 ) $ (97 ) $ (22,956 ) Adjustments related to postretirement benefits 2,920 (318 ) 2,602 Change in unrealized gain/loss on investments (67 ) - (67 ) Reclassification due to sale of PBC Test Business (2,515 ) - (2,515 ) Other comprehensive loss $ (22,521 ) $ (415 ) $ (22,936 ) Year ended December 31, 2022 Foreign currency translation adjustments $ (17,991 ) $ 41 $ (17,950 ) Adjustments related to postretirement benefits 6,690 (796 ) $ 5,894 Change in unrealized gain/loss on investments (694 ) - $ (694 ) Other comprehensive loss $ (11,995 ) $ (755 ) $ (12,750 ) Components of accumulated other comprehensive income (loss), net of tax, at the end of each period are as follows: (in thousands) 2022 2021 Accumulated net currency translation adjustments $ (46,308 ) $ (25,833 ) Accumulated net adjustments related to postretirement benefits 7,031 $ 1,153 Accumulated net unrealized gain/loss on investments (735 ) $ (67 ) Accumulated reclassification due to sale of PBC Test Business - $ (2,515 ) Total accumulated other comprehensive loss $ (40,012 ) $ (27,262 )

Note 16 - Related Party Transac

Note 16 - Related Party Transactions	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	16. Related Party Transactions At December 31, 2022, 13 January 20, 2023. We have an ownership interest in Fraes-und Technologiezentrum GmbH Frasdorf (“FTZ”), a company based in Germany that provides milling services to one not 2022, 2021 2020, not We also had an ownership interest in ETZ Elektrisches Testzentrum fuer Leiterplatten GmbH (“ETZ”) which provided our PCB Test business, atg-Luther & Maelzer GmbH, with certain component parts. Our ownership interest in ETZ was transferred on June 24, 2021 no 2021 2020, not

Note 17 - Subsequent Event

Note 17 - Subsequent Event	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Subsequent Events [Text Block]	17. Subsequent Event On January 30, 2023, January 30, 2023, January 30, 2023, December 31, 2022. 2023.

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	COHU, INC. SCHEDULE II (in thousands) Additions (Reductions) Balance at Not Additions Balance Beginning Charged Charged Deductions/ at End Description of Year to Expense (1) to Expense Write-offs of Year Allowance for doubtful accounts: Year ended December 26, 2020 $ 9 $ (1 ) $ 79 $ (41 ) $ 128 Year ended December 25, 2021 $ 128 $ 14 $ 149 $ 1 $ 290 Year ended December 31, 2022 $ 290 $ (8 ) $ 122 $ 205 $ 199 Reserve for excess and obsolete inventories: Year ended December 26, 2020 $ 20,958 $ 4,611 $ 8,117 $ 6,749 $ 26,937 Year ended December 25, 2021 $ 26,937 $ (2,926 ) (2) $ 7,102 $ 8,101 $ 23,012 Year ended December 31, 2022 $ 23,012 $ 698 $ 7,179 $ 4,018 $ 26,871 All amounts presented above have been restated to exclude the impact of our discontinued operations. ( 1 ( 2 not

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation 810, Consolidation 810” The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. Our fiscal years are based on a 52 53 December. December 31, 2022, 53 December 25, 2021, December 26, 2020, 52
Discontinued Operations, Policy [Policy Text Block]	Business Divestitures and Discontinued Operations June 24, 2021, February 2020, not 14, Business Divestitures and Discontinued Operations
Earnings Per Share, Policy [Policy Text Block]	Income (Loss) Per Share December 31, 2022, December 25, 2021 December 26, 2020, The following table reconciles the denominators used in computing basic and diluted income (loss) per share: (in thousands) 2022 2021 2020 Weighted average common shares outstanding 48,178 47,409 41,854 Effect of dilutive stock options and restricted stock units 621 1,051 - 48,799 48,460 41,854 For the year ended December 26, 2020,
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash, Cash Equivalents and Short-term Investments three three 12 one
Fair Value Measurement, Policy [Policy Text Block]	Fair Value of Financial Instruments
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of Credit Risk one Our trade accounts receivable are presented net of an allowance for credit losses, which is determined in accordance with the guidance provided by ASC Topic 326, Financial Instruments-Credit Losses 326” December 31, 2022, may
Inventory, Policy [Policy Text Block]	Inventories first first 2022 2021, 2020 Inventories by category were as follows (in thousands) December 31, December 25, 2022 2021 Raw materials and purchased parts $ 106,041 $ 92,798 Work in process 36,024 40,732 Finished goods 28,076 27,523 Total inventories $ 170,141 $ 161,053
Assets Held-for-sale [Policy Text Block]	Gain on Sale of Facilities 4, 2020,
Property, Plant and Equipment, Policy [Policy Text Block]	Property, Plant and Equipment thirty forty five fifteen three ten not Property, plant and equipment, at cost, consisted of the following (in thousands) December 31, December 25, 2022 2021 Land and land improvements $ 7,066 $ 7,703 Buildings and building improvements 31,161 31,711 Machinery and equipment 105,109 95,542 143,336 134,956 Less accumulated depreciation and amortization (78,325 ) (70,999 ) Property, plant and equipment, net $ 65,011 $ 63,957 Depreciation expense was $12.8 million in 2022, 2021 2020.
Internal Use Software, Policy [Policy Text Block]	Cloud Computing Implementation Costs 350, Intangibles Goodwill and Other 350” Total unamortized capitalized cloud computing implementation costs totaled $14.7 million and $13.5 million at December 31, 2022 December 25, 2021, fourth 2022 seven December 31, 2022 December 25, 2021,
Segment Reporting, Policy [Policy Text Block]	Segment Information 280, Segment Reporting 280” three 280 one June 24, 2021, two
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill, Purchased Intangible Assets and Other Long-lived Assets may not first second not 50/50 We conduct our annual impairment test as of October 1st October 1, 2022, may December 31, 2022, not not. may Long-lived assets, other than goodwill, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets might not may not not
Standard Product Warranty, Policy [Policy Text Block]	Product Warranty
Income Tax, Policy [Policy Text Block]	Income Taxes not 50 not not no We recognized deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established for those jurisdictions when necessary to reduce deferred tax assets to the amounts that are more likely than not
Commitments and Contingencies, Policy [Policy Text Block]	Contingencies and Litigation
Lessee, Leases [Policy Text Block]	Leases Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at the adoption date of January 1, 2019, not The operating lease ROU asset also includes any lease payments made, lease incentives, favorable and unfavorable lease terms recognized in business acquisitions and excludes initial direct costs incurred and variable lease payments. Variable lease payments include estimated payments that are subject to reconciliations throughout the lease term, increases or decreases in the contractual rent payments, as a result of changes in indices or interest rates and tax payments that are based on prevailing rates. Our lease terms may Leases with an initial term of 12 not We sublease certain leased assets to third None
Revenue [Policy Text Block]	Revenue Recognition not Revenue for established products that have previously satisfied a customer’s acceptance requirements is generally recognized upon shipment. In cases where a prior history of customer acceptance cannot be demonstrated or from sales where customer payment dates are not Certain of our equipment sales have multiple performance obligations. These arrangements involve the delivery or performance of multiple performance obligations, and transfer of control of performance obligations may Unsatisfied performance obligations primarily represent contracts for products with future delivery dates. At December 31, 2022 December 25, 2021, one 606, not one We generally sell our equipment with a product warranty. The product warranty provides assurance to customers that delivered products are as specified in the contract (an “assurance-type warranty”). Therefore, we account for such product warranties under ASC Topic 460, Guarantees 460” not The transaction price reflects our expectations about the consideration we will be entitled to receive from the customer and may not not Our contracts are typically less than one 606 one Accounts receivable represents our unconditional right to receive consideration from our customers. Payments terms do not one not On shipments where sales are not December 31, 2022, one December 25, 2021, one Disaggregated net sales by segment are as follows: (in thousands) 2022 2021 2020 Systems-Semiconductor Test & Inspection $ 474,655 $ 541,589 $ 317,821 Non-systems-Semiconductor Test & Inspection 338,120 318,865 267,419 Systems-PCB Test - 17,831 33,293 Non-systems-PCB Test - 8,929 17,474 Net sales $ 812,775 $ 887,214 $ 636,007
Advertising Cost [Policy Text Block]	Advertising Costs not
Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block]	Restructuring Costs one 420, Exit or Disposal Cost Obligations 420” . 420 712, Nonretirement Postemployment Benefits.
Debt, Policy [Policy Text Block]	Debt Issuance Costs December 31, 2022, December 25, 2021 December 26, 2020,
Share-Based Payment Arrangement [Policy Text Block]	Share-based Compensation
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Remeasurement and Currency Translation December 31, 2022 December 25, 2021, $0.4 December 26, 2020, $3.2 Certain of our foreign subsidiaries have designated the local currency as their functional currency and, as a result, their assets and liabilities are translated at the rate of exchange at the balance sheet date, while revenue and expenses are translated using the average exchange rate for the period. Cumulative translation adjustments resulting from the translation of the financial statements are included as a separate component of stockholders’ equity.
Comprehensive Income, Policy [Policy Text Block]	Accumulated Other Comprehensive Loss December 31, 2022, December 25, 2021, December 25, 2021 December 31, 2022 December 25, 2021 December 31, 2022, 2022 2021 not 15, Accumulated Other Comprehensive Income
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements not Recently Issued Accounting Pronouncements March 2020, 2020 04, Reference Rate Reform (Topic 848 may 2020 04 may December 31, 2022. December 2022, 2022 06, Reference Rate Reform (Topic 848 848 848 December 31, 2022 December 31, 2024. not All other newly issued accounting pronouncements not not

Note 1 - Summary of Significa_2

Note 1 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	(in thousands) 2022 2021 2020 Weighted average common shares outstanding 48,178 47,409 41,854 Effect of dilutive stock options and restricted stock units 621 1,051 - 48,799 48,460 41,854
Schedule of Inventory, Current [Table Text Block]	December 31, December 25, 2022 2021 Raw materials and purchased parts $ 106,041 $ 92,798 Work in process 36,024 40,732 Finished goods 28,076 27,523 Total inventories $ 170,141 $ 161,053
Property, Plant and Equipment [Table Text Block]	December 31, December 25, 2022 2021 Land and land improvements $ 7,066 $ 7,703 Buildings and building improvements 31,161 31,711 Machinery and equipment 105,109 95,542 143,336 134,956 Less accumulated depreciation and amortization (78,325 ) (70,999 ) Property, plant and equipment, net $ 65,011 $ 63,957
Disaggregation of Revenue [Table Text Block]	(in thousands) 2022 2021 2020 Systems-Semiconductor Test & Inspection $ 474,655 $ 541,589 $ 317,821 Non-systems-Semiconductor Test & Inspection 338,120 318,865 267,419 Systems-PCB Test - 17,831 33,293 Non-systems-PCB Test - 8,929 17,474 Net sales $ 812,775 $ 887,214 $ 636,007

Note 2 - Goodwill and Purchas_2

Note 2 - Goodwill and Purchased Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Goodwill [Table Text Block]	Semiconductor Test & Inspection PCB Test Total Goodwill Balance December 26, 2020 $ 230,724 $ 21,580 $ 252,304 Sale of PCB Test Business (1) - (21,899 ) (21,899 ) Impact of currency exchange (10,933 ) 319 (10,614 ) Balance December 25, 2021 219,791 - 219,791 Impact of currency exchange (6,252 ) - (6,252 ) Balance December 31, 2022 $ 213,539 $ - $ 213,539
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table Text Block]	December 31, 2022 December 25, 2021 Remaining Gross Carrying Accumulated Useful Life Gross Carrying Accumulated Amount Amortization (years) Amount Amortization Developed technology $ 224,253 $ 128,938 3.6 $ 229,131 $ 104,855 Customer relationships 64,632 31,015 6.5 65,916 26,189 Trade names 20,461 9,397 6.4 20,877 7,714 Covenant not-to-compete 269 161 4.0 308 154 $ 309,615 $ 169,511 $ 316,232 $ 138,912

Note 3 - Borrowings and Credi_2

Note 3 - Borrowings and Credit Agreements (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Debt [Table Text Block]	Fiscal year ended (in thousands) December 31, 2022 December 25, 2021 Bank term loan under credit agreement $ 66,952 $ 103,130 Bank term loans-Kita 2,466 3,070 Construction loan-Cohu GmbH 8,414 10,045 Lines of credit 1,907 3,059 Total debt 79,739 119,304 Less: financing fees and discount (764 ) (1,514 ) Less: current portion (6,311 ) (14,397 ) Total long-term debt $ 72,664 $ 103,393
Schedule of Maturities of Long-Term Debt [Table Text Block]	2023 $ 6,574 2024 4,672 2025 61,130 2026 1,183 2027 1,189 Thereafter 4,991 Total $ 79,739

Note 4 - Restructuring Charges

Note 4 - Restructuring Charges (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Restructuring and Related Costs [Table Text Block]	(in thousands) 2022 2021 2020 Employee severance costs $ (8 ) $ 1,161 $ 6,485 Inventory related charges (adjustments) (454 ) (558 ) 3,731 Other restructuring costs 613 662 1,138 Total $ 151 $ 1,265 $ 11,354 Employee Severance Other Exit Costs Total Balance, December 26, 2020 $ 5,826 - 5,826 Costs accrued 1,161 662 1,823 Amounts paid or charged (6,545 ) (662 ) (7,207 ) Impact of currency exchange (94 ) - (94 ) Balance, December 25, 2021 348 - 348 Costs accrued (8 ) 613 605 Amounts paid or charged (331 ) (613 ) (944 ) Impact of currency exchange (9 ) - (9 ) Balance, December 31, 2022 $ - $ - $ -

Note 5 - Financial Instrument_2

Note 5 - Financial Instruments Measured at Fair Value (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Unrealized Gain (Loss) on Investments [Table Text Block]	At December 31, 2022 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses (1) Value Corporate debt securities (2) $ 59,283 $ 30 $ 240 $ 59,073 U.S. treasury securities 34,614 1 418 34,197 Bank certificates of deposit 36,500 20 41 36,479 Asset-backed securities 12,727 10 79 12,658 Foreign government security 828 - - 828 $ 143,952 $ 61 $ 778 $ 143,235 At December 25, 2021 Gross Gross Estimated Amortized Unrealized Unrealized Fair Cost Gains Losses (1) Value Corporate debt securities (2) $ 84,060 $ 2 $ 31 $ 84,031 U.S. treasury securities 3,953 - 5 3,948 Bank certificates of deposit 800 - - 800 Foreign government security 925 - - 925 $ 89,738 $ 2 $ 36 $ 89,704
Investments Classified by Contractual Maturity Date [Table Text Block]	Amortized Estimated (in thousands) Cost Fair Value Due in one year or less $ 112,956 $ 112,683 Due after one year through three years 30,996 30,552 $ 143,952 $ 143,235
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	Fair value measurements at December 31, 2022 using: Total estimated Level 1 Level 2 Level 3 fair value Cash $ 190,371 $ - $ - $ 190,371 Corporate debt securities - 69,753 - 69,753 Money market funds - 40,290 - 40,290 Bank certificates of deposit - 37,480 - 37,480 U.S. treasury securities - 34,196 - 34,196 Asset-backed securities - 12,658 - 12,658 Foreign government security - 828 - 828 $ 190,371 $ 195,205 $ - $ 385,576 Fair value measurements at December 25, 2021 using: Total estimated Level 1 Level 2 Level 3 fair value Cash $ 195,297 $ - $ - $ 195,297 Money market funds - 92,400 - 92,400 Corporate debt securities - 86,535 - 86,535 U.S. treasury securities - 3,948 - 3,948 Foreign government security - 925 - 925 Bank certificates of deposit - 800 - 800 $ 195,297 $ 184,608 $ - $ 379,905

Note 6 - Employee Benefit Pla_2

Note 6 - Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Net Benefit Costs [Table Text Block]	(in thousands) 2022 2021 2020 Service cost $ 954 $ 1,223 $ 1,310 Interest cost 56 61 67 Expected return on assets (128 ) (128 ) (200 ) Settlements (487 ) 72 292 Net periodic costs $ 395 $ 1,228 $ 1,469
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]	(in thousands) 2022 2021 Change in projected benefit obligation: Benefit obligation at beginning of year $ (28,765 ) $ (31,039 ) Service cost (954 ) (1,223 ) Interest cost (56 ) (61 ) Actuarial gain 6,043 1,179 Participant contributions (1,459 ) (1,780 ) Benefits paid 378 436 Plan change 397 1,076 Settlements 2,426 1,653 Foreign currency exchange adjustment 362 994 Benefit obligation at end of year (21,628 ) (28,765 ) Change in plan assets: Fair value of plan assets at beginning of year 18,919 18,756 Return on assets, net of actuarial loss 119 207 Employer contributions 831 878 Participant contributions 1,459 1,780 Benefits paid (378 ) (436 ) Settlements (2,426 ) (1,653 ) Foreign currency exchange adjustment (113 ) (613 ) Fair value of plan assets at end of year 18,411 18,919 Net liability at end of year $ (3,217 ) $ (9,846 )
Defined Benefit Plan, Assumptions [Table Text Block]	2022 2021 Discount rate 2.3 % 0.2 % Compensation increase 3.0 % 1.5 % 2022 2021 2020 Discount rate 2.3 % 0.2 % 0.2 % Rate of return on assets 1.8 % 0.7 % 1.0 % Compensation increase 3.0 % 1.1 % 1.1 %
Schedule of Net Funded Status [Table Text Block]	(in thousands) 2022 2021 Accumulated benefit obligation at beginning of year $ (2,097 ) $ (2,398 ) Interest cost (51 ) (49 ) Actuarial gain 382 241 Benefits paid 109 109 Accumulated benefit obligation at end of year (1,657 ) (2,097 ) Plan assets at end of year - - Funded status $ (1,657 ) $ (2,097 )
Share-Based Payment Arrangement, Option, Activity [Table Text Block]	2022 2021 2020 (in thousands, except per share data) Shares Wt. Avg. Ex. Price Shares Wt. Avg. Ex. Price Shares Wt. Avg. Ex. Price Outstanding and exercisable, beginning of year 12 $ 9.44 262 $ 10.01 363 $ 10.27 Exercised (12 ) $ 9.44 (250 ) $ 10.03 (101 ) $ 10.95 Outstanding and exercisable, end of year - $ - 12 $ 9.44 262 $ 10.01
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	2022 2021 2020 (in thousands, except per share data) Units Wt. Avg. Fair Value Units Wt. Avg. Fair Value Units Wt. Avg. Fair Value Outstanding, beginning of year 1,058 $ 21.16 1,414 $ 15.16 1,328 $ 17.05 Granted 431 $ 27.74 270 $ 41.66 779 $ 14.02 Released (474 ) $ 19.94 (579 ) $ 16.23 (621 ) $ 17.48 Cancelled (46 ) $ 24.33 (47 ) $ 18.96 (72 ) $ 17.59 Outstanding, end of year 969 $ 24.55 1,058 $ 21.16 1,414 $ 15.16
Schedule of Nonvested Performance-Based Units Activity [Table Text Block]	2022 2021 2020 (in thousands, except per share data) Units Wt. Avg. Fair Value Units Wt. Avg. Fair Value Units Wt. Avg. Fair Value Outstanding, beginning of year 384 $ 22.22 425 $ 15.51 364 $ 18.72 Granted 151 $ 33.22 93 $ 51.43 200 $ 13.18 Released (55 ) $ 14.11 (125 ) $ 21.77 (39 ) $ 21.40 Cancelled (77 ) $ 15.94 (9 ) $ 14.04 (100 ) $ 20.25 Outstanding, end of year 403 $ 28.64 384 $ 22.22 425 $ 15.51
Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Employee Stock Purchase Plan 2022 2021 2020 Dividend yield 0.0 % 0.0 % 0.5 % Expected volatility 45.6 % 58.3 % 67.1 % Risk-free interest rate 1.2 % 0.1 % 1.1 % Expected term (years) 0.5 0.5 0.5 Weighted-average grant date fair value per share $ 8.79 $ 9.42 $ 6.01 Restricted Stock Units 2022 2021 2020 Dividend yield 0.0 % 0.0 % 0.0 %
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	(in thousands) 2022 2021 2020 Cost of sales $ 646 $ 828 $ 893 Research and development 3,100 3,017 3,245 Selling, general and administrative 11,172 9,947 10,096 Share-based compensation of continuing operations 14,918 13,792 14,234 Income tax benefit (4,004 ) (722 ) (963 ) Total share-based compensation, net of tax $ 10,914 $ 13,070 $ 13,271

Note 7 - Derivative Financial_2

Note 7 - Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Derivative Instruments [Table Text Block]	Currency Contract Position Contract Amount (Local Currency) Contract Amount (U.S. Dollars) Euro Buy 81,677 $ 87,300 Swiss Franc Buy 20,714 22,500 $ 109,800
Derivative Instruments, Gain (Loss) [Table Text Block]	Derivatives Not Designated Location of Gain (Loss) Fiscal Year as Hedging Instruments Recognized on Derivatives 2022 2021 2020 Foreign exchange forward contracts Foreign transaction gain (loss) $ (5,356 ) $ (3,428 ) $ 756

Note 9 - Income Taxes (Tables)

Note 9 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	(in thousands) 2022 2021 2020 Current: U.S. Federal $ 1,609 $ 1,103 $ - U.S. State 456 101 21 Foreign 31,307 22,862 5,950 Total current 33,372 24,066 5,971 Deferred: U.S. Federal (9 ) 5 8 Foreign (3,495 ) 948 (5,313 ) Total deferred (3,504 ) 953 (5,305 ) $ 29,868 $ 25,019 $ 666
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	(in thousands) 2022 2021 2020 U.S. $ 9,180 $ 30,588 $ (25,005 ) Foreign 117,535 161,756 11,828 Total $ 126,715 $ 192,344 $ (13,177 )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	(in thousands) 2022 2021 Deferred tax assets: Inventory, receivable and warranty reserves $ 13,599 $ 12,166 Net operating loss carryforwards 39,545 44,806 Tax credit carryforwards 29,646 31,264 Capitalized R&D 19,819 8,728 Accrued employee benefits 4,416 5,695 Stock-based compensation 2,990 2,222 Lease liabilities 3,965 4,500 Other 472 2,674 Gross deferred tax assets 114,452 112,055 Less valuation allowance (89,234 ) (76,250 ) Total deferred tax assets 25,218 35,805 Deferred tax liabilities: Intangible assets and other acquisition basis differences 38,921 48,657 Operating lease right-of-use assets 3,573 4,066 Unremitted earnings of foreign subsidiaries 153 4,207 Total deferred tax liabilities 42,647 56,930 Net deferred tax liabilities $ (17,429 ) $ (21,125 ) (in thousands) 2022 2021 Other assets (long-term) $ 3,930 $ 4,762 Long-term deferred income tax liabilities (21,359 ) (25,887 ) Net deferred tax liabilities $ (17,429 ) $ (21,125 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	(in thousands) 2022 2021 2020 Tax provision at U.S. 21 $ 26,610 $ 40,392 $ (2,757 ) State income taxes, net of federal tax benefit (1,535 ) 2,246 (1,160 ) Settlements, adjustments and releases from statute expirations 348 (787 ) (118 ) Federal R&D credits (1,679 ) (943 ) (46 ) Stock-based compensation (572 ) (4,802 ) 727 Excess executive compensation 946 1,608 491 Change in valuation allowance 13,307 (9,882 ) (1,691 ) Exemption of PTG gain - (12,378 ) - Dividend, net of foreign tax credits 13 693 1,224 GILTI, net of foreign tax credits 3,458 9,343 4,191 Foreign rate differential (6,131 ) (1,023 ) (1,512 ) Other, net (4,897 ) 552 1,317 $ 29,868 $ 25,019 $ 666
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	(in thousands) 2022 2021 2020 Balance at beginning of year $ 33,391 $ 33,696 $ 34,740 Additions for tax positions of current year 910 686 817 Reductions for tax positions of prior years (428 ) (83 ) (425 ) Reductions due to lapse of the statute of limitations (354 ) (1,012 ) (304 ) Reductions due to settlements - - (1,134 ) Foreign exchange rate impact (151 ) 104 2 Balance at end of year $ 33,368 $ 33,391 $ 33,696

Note 10 - Segment and Geograp_2

Note 10 - Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	(in thousands) 2021 2020 Net sales by segment: Semiconductor Test & Inspection $ 860,454 $ 585,240 PCB Test 26,760 50,767 Total consolidated net sales for reportable segments $ 887,214 $ 636,007 Segment profit (loss) before tax: Semiconductor Test & Inspection $ 138,026 $ (2,497 ) PCB Test 3,907 6,971 Profit for reportable segments 141,933 4,474 Other unallocated amounts: Corporate expenses (10,819 ) (4,384 ) Gain on sale of PCB Test business 70,815 - Interest expense (6,413 ) (13,759 ) Interest income 239 224 Gain on extinguishment of debt (3,411 ) 268 Profit (loss) from continuing operations before taxes $ 192,344 $ (13,177 ) (in thousands) 2021 2020 Depreciation and amortization by segment deducted in arriving at profit (loss): Semiconductor Test & Inspection $ 48,129 $ 51,548 PCB Test 439 1,198 Total depreciation and amortization $ 48,568 $ 52,746 Capital expenditures by segment: Semiconductor Test & Inspection $ 11,954 $ 18,616 PCB Test 46 44 Total consolidated capital expenditures $ 12,000 $ 18,660 (in thousands) 2020 Total assets by segment: Semiconductor Test & Inspection $ 968,028 PCB Test 66,826 Total assets for reportable segments 1,034,854 Corporate, principally cash and investments 55,492 Discontinued operations - Total consolidated assets $ 1,090,346
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	2022 2021 2020 Analog Devices * 14.1 % *
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	(in thousands) 2022 2021 2020 China $ 146,227 $ 213,575 $ 143,360 Philippines 111,647 155,070 56,272 Malaysia 99,508 79,777 57,893 United States 79,093 77,495 108,694 Taiwan 59,835 88,152 83,685 Rest of the world 316,465 273,145 186,103 Total, net $ 812,775 $ 887,214 $ 636,007
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]	(in thousands) 2022 2021 Property, plant and equipment: United States $ 18,419 $ 18,375 Germany 15,977 17,419 Philippines 14,706 10,384 Japan 9,316 11,156 Malaysia 4,300 4,082 Rest of the world 2,293 2,541 Total, net $ 65,011 $ 63,957 Goodwill and other intangible assets: Germany $ 158,401 $ 181,146 United States 131,068 150,477 Malaysia 43,571 43,611 Singapore 12,512 12,990 Switzerland 4,299 4,583 Japan 2,641 3,148 Rest of the world 1,151 1,156 Total, net $ 353,643 $ 397,111

Note 11 - Leases (Tables)

Note 11 - Leases (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Leases, Balance Sheet Information [Table Text Block]	December 31, December 25, (in thousands) Classification 2022 2021 Assets: Operating lease assets Operating lease right-of-use assets $ 22,804 $ 25,060 Finance lease assets Property, plant and equipment, net (1) 323 423 Total lease assets $ 23,127 $ 25,483 Liabilities: Current: Operating Other accrued liabilities $ 4,927 $ 4,886 Finance Other accrued liabilities 49 167 Noncurrent: Operating Long-term lease liabilities 19,185 21,977 Finance Long-term lease liabilities 24 63 Total lease liabilities $ 24,185 $ 27,093 Weighted-average remaining lease term (years): Operating leases 6.2 6.9 Finance leases 1.7 1.8 Weighted-average discount rate: Operating leases 6.2 % 6.3 % Finance leases 2.2 % 0.7 %
Lease, Cost [Table Text Block]	December 31, December 25, (in thousands) 2022 2021 Operating leases $ 6,698 $ 7,638 Variable lease expense 2,220 2,192 Short-term operating leases 4 69 Finance leases: Amortization of leased assets 88 86 Interest on lease liabilities 1 2 Sublease income (69 ) (81 ) Net lease cost $ 8,942 $ 9,906
Lessee, Lease, Liability, Maturity [Table Text Block]	Operating Finance (in thousands) leases leases Total 2023 $ 6,197 $ 50 $ 6,247 2024 5,848 11 5,859 2025 5,234 11 5,245 2026 2,849 3 2,852 2027 1,780 - 1,780 Thereafter 7,904 - 7,904 Total lease payments 29,812 75 29,887 Less: Interest (5,700 ) (2 ) (5,702 ) Present value of lease liabilities $ 24,112 $ 73 $ 24,185
Lease, Cash Flow Information [Table Text Block]	December 31, December 25, (in thousands) 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,716 $ 7,628 Operating cash flows from finance leases $ 1 $ 1 Financing cash flows from finance leases $ 167 $ 186 Leased assets obtained in exchange for new finance lease liabilities $ - $ 54 Leased assets obtained in exchange for new operating lease liabilities $ 2,874 $ 3,866

Note 13 - Guarantees (Tables)

Note 13 - Guarantees (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	(in thousands) 2022 2021 2020 Beginning balance $ 7,691 $ 6,382 $ 6,155 Warranty accruals 8,897 13,389 6,173 Warranty payments (10,374 ) (11,135 ) (5,946 ) Warranty liability transferred - (945 ) - Ending balance $ 6,214 $ 7,691 $ 6,382

Note 14 - Business Divestitur_2

Note 14 - Business Divestitures and Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Disposal Groups, Including Discontinued Operations [Table Text Block]	December 26, 2020 Net sales $ 432 Operating income $ 11 Gain on sale of FSG 35 Income before taxes 46 Income tax provision 4 Income, net of tax $ 42

Note 15 - Accumulated Other C_2

Note 15 - Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	(in thousands) Before Tax amount Tax (Expense) Benefit Net of Tax Amount Year ended December 26, 2020 Foreign currency translation adjustments $ 27,321 $ - $ 27,321 Adjustments related to postretirement benefits 2,599 (216 ) 2,383 Other comprehensive income $ 29,920 $ (216 ) $ 29,704 Year ended December 25, 2021 Foreign currency translation adjustments $ (22,859 ) $ (97 ) $ (22,956 ) Adjustments related to postretirement benefits 2,920 (318 ) 2,602 Change in unrealized gain/loss on investments (67 ) - (67 ) Reclassification due to sale of PBC Test Business (2,515 ) - (2,515 ) Other comprehensive loss $ (22,521 ) $ (415 ) $ (22,936 ) Year ended December 31, 2022 Foreign currency translation adjustments $ (17,991 ) $ 41 $ (17,950 ) Adjustments related to postretirement benefits 6,690 (796 ) $ 5,894 Change in unrealized gain/loss on investments (694 ) - $ (694 ) Other comprehensive loss $ (11,995 ) $ (755 ) $ (12,750 )
Condensed Statement of Comprehensive Income [Table Text Block]	(in thousands) 2022 2021 Accumulated net currency translation adjustments $ (46,308 ) $ (25,833 ) Accumulated net adjustments related to postretirement benefits 7,031 $ 1,153 Accumulated net unrealized gain/loss on investments (735 ) $ (67 ) Accumulated reclassification due to sale of PBC Test Business - $ (2,515 ) Total accumulated other comprehensive loss $ (40,012 ) $ (27,262 )

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Valuation and Qualifying Accounts Disclosure [Table Text Block]	Additions (Reductions) Balance at Not Additions Balance Beginning Charged Charged Deductions/ at End Description of Year to Expense (1) to Expense Write-offs of Year Allowance for doubtful accounts: Year ended December 26, 2020 $ 9 $ (1 ) $ 79 $ (41 ) $ 128 Year ended December 25, 2021 $ 128 $ 14 $ 149 $ 1 $ 290 Year ended December 31, 2022 $ 290 $ (8 ) $ 122 $ 205 $ 199 Reserve for excess and obsolete inventories: Year ended December 26, 2020 $ 20,958 $ 4,611 $ 8,117 $ 6,749 $ 26,937 Year ended December 25, 2021 $ 26,937 $ (2,926 ) (2) $ 7,102 $ 8,101 $ 23,012 Year ended December 31, 2022 $ 23,012 $ 698 $ 7,179 $ 4,018 $ 26,871

Note 1 - Summary of Significa_3

Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands			12 Months Ended
	Oct. 01, 2022 USD ($)	Jun. 24, 2021	Dec. 31, 2022 USD ($) shares	Dec. 25, 2021 USD ($) shares	Dec. 26, 2020 USD ($) shares
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares			261,000	180,000	113,000
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense			$ 7,200	$ 7,100	$ 8,100
Gain (Loss) on Disposition of Property Plant Equipment, Total			0	0	4,495
Depreciation, Total			12,800	13,200	14,000
Capitalized Computer Software, Gross			14,700	13,500
Capitalized Computer Software, Amortization			$ 2,060	$ 1,644	1,191
Number of Operating Segments				3
Number of Reportable Segments		2	1	1
Goodwill and Intangible Asset Impairment, Total	$ 0
Revenue, Remaining Performance Obligation, Amount			$ 7,100	$ 7,700
Provision for Doubtful Accounts				0
Contract with Customer, Asset, after Allowance for Credit Loss, Total				0
Contract with Customer, Liability, Total			16,100	21,900
Deferred Profit			8,022	13,208
Deferred Profit Long-term			5,500	6,100
Amortization of Debt Issuance Costs			300	600	1,200
Foreign Currency Transaction Gain (Loss), Realized			1,600	400
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total			(40,012)	(27,262)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax			$ (18,000)	$ (23,000)
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			7 years
Minimum [Member]
Standard Product Warranty Term (Month)			12 months
Maximum [Member]
Standard Product Warranty Term (Month)			36 months
Building [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)			30 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)			40 years
Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)			5 years
Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)			15 years
Machinery, Equipment and Software [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)			3 years
Machinery, Equipment and Software [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)			10 years
Xcerra [Member]
Inventory Write-down					$ 2,100

Note 1 - Summary of Significa_4

Note 1 - Summary of Significant Accounting Policies - Computation of Basic and Diluted Income (Loss) Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Weighted average common shares outstanding (in shares)	48,178	47,409	41,854
Effect of dilutive stock options and restricted stock units (in shares)	621	1,051	0
Weighted Average Number of Shares Outstanding, Diluted, Total	48,799	48,460	41,854

Note 1 - Summary of Significa_5

Note 1 - Summary of Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Raw materials and purchased parts	$ 106,041	$ 92,798
Work in process	36,024	40,732
Finished goods	28,076	27,523
Total inventories	$ 170,141	$ 161,053

Note 1 - Summary of Significa_6

Note 1 - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Property, plant and equipment	$ 143,336	$ 134,956
Less accumulated depreciation and amortization	(78,325)	(70,999)
Property, plant and equipment, net	65,011	63,957
Land and Land Improvements [Member]
Property, plant and equipment	7,066	7,703
Building and Building Improvements [Member]
Property, plant and equipment	31,161	31,711
Machinery and Equipment [Member]
Property, plant and equipment	$ 105,109	$ 95,542

Note 1 - Summary of Significa_7

Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Net sales	$ 812,775	$ 887,214	$ 636,007
Semiconductor Test and Inspection [Member]
Net sales		860,454	585,240
PCB Test [Member]
Net sales		26,760	50,767
Systems [Member] | Semiconductor Test and Inspection [Member]
Net sales	474,655	541,589	317,821
Systems [Member] | PCB Test [Member]
Net sales	0	17,831	33,293
Non-systems [Member] | Semiconductor Test and Inspection [Member]
Net sales	338,120	318,865	267,419
Non-systems [Member] | PCB Test [Member]
Net sales	$ 0	$ 8,929	$ 17,474

Note 2 - Goodwill and Purchas_3

Note 2 - Goodwill and Purchased Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Goodwill, Impairment Loss	$ 0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 0	$ 100	$ 11,249
Amortization of Intangible Assets			33,185	$ 35,414	$ 38,746
Finite-Lived Intangible Asset, Expected Amortization, Year One	33,400		33,400
Finite-Lived Intangible Asset, Expected Amortization, Year Two	33,400		33,400
Finite-Lived Intangible Asset, Expected Amortization, Year Three	24,800		24,800
Finite-Lived Intangible Asset, Expected Amortization, Year Four	18,600		18,600
Finite-Lived Intangible Asset, Expected Amortization, Year Five	15,100		15,100
Finite-Lived Intangible Asset, Expected Amortization, after Year Five	$ 14,800		$ 14,800
Indefinite-lived In Process Research and Development [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 100

Note 2 - Goodwill and Purchas_4

Note 2 - Goodwill and Purchased Intangible Assets - Changes in Carrying Value of Goodwill (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 25, 2021
Beginning balance		$ 219,791	$ 252,304
Sale of PCB Test Business (1)	[1]		(21,899)
Impact of currency exchange		(6,252)	(10,614)
Ending balance		213,539	219,791
Semiconductor Test and Inspection [Member]
Beginning balance		219,791	230,724
Sale of PCB Test Business (1)	[1]		0
Impact of currency exchange		(6,252)	(10,933)
Ending balance		213,539	219,791
PCB Test [Member]
Beginning balance		0	21,580
Sale of PCB Test Business (1)	[1]		(21,899)
Impact of currency exchange		0	319
Ending balance		$ 0	$ 0
[1]On June 24, 2021, we completed the sale of our PCB Test business. See Note 14, “Business Divestitures and Discontinued Operations” for additional information.

Note 2 - Goodwill and Purchas_5

Note 2 - Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Gross Carrying Amount, finite-lived intangible assets	$ 309,615	$ 316,232
Accumulated Amortization	169,511	138,912
Developed Technology Rights [Member]
Gross Carrying Amount, finite-lived intangible assets	224,253	229,131
Accumulated Amortization	$ 128,938	104,855
Remaining Useful Life (Year)	3 years 7 months 6 days
Customer Relationships [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 64,632	65,916
Accumulated Amortization	$ 31,015	26,189
Remaining Useful Life (Year)	6 years 6 months
Trade Names [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 20,461	20,877
Accumulated Amortization	$ 9,397	7,714
Remaining Useful Life (Year)	6 years 4 months 24 days
Noncompete Agreements [Member]
Gross Carrying Amount, finite-lived intangible assets	$ 269	308
Accumulated Amortization	$ 161	$ 154
Remaining Useful Life (Year)	4 years

Note 3 - Borrowings and Credi_3

Note 3 - Borrowings and Credit Agreements (Details Textual) $ in Thousands, € in Millions, ¥ in Millions, SFr in Millions		12 Months Ended
	Oct. 01, 2018 USD ($)	Dec. 31, 2022 USD ($)	Dec. 25, 2021 USD ($)	Dec. 26, 2020 USD ($)	Dec. 31, 2022 EUR (€)	Dec. 31, 2022 JPY (¥)	Dec. 31, 2022 CHF (SFr)	Jun. 30, 2020 EUR (€)
Long-Term Debt, Total		$ 79,739
Long-Term Debt, Current Maturities, Total		6,311	$ 14,397
Repayments of Long-Term Debt, Total		38,226	206,069	$ 41,056
Gain (Loss) on Extinguishment of Debt, Total		(312)	(3,411)	$ 268
Long-Term Line of Credit, Total		1,907	3,059
Ismeca [Member]
Line of Credit Facility, Maximum Borrowing Capacity | SFr							SFr 2
Long-Term Line of Credit, Total		$ 0	0
Number of Available Lines of Credit		1			1	1	1
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity | ¥						¥ 960
Long-Term Line of Credit, Total		$ 1,900				¥ 250
Secured Term Loan Facility [Member]
Debt Instrument, Face Amount	$ 350,000
Debt Instrument, Amortization, Percentage of Principal Amount	0.25%
Long-Term Debt, Total		66,200	101,600
Long-Term Debt, Current Maturities, Total		3,200	10,100
Long-Term Debt, Fair Value		66,600
Extinguishment of Debt, Amount		31,800	200,000
Repayments of Long-Term Debt, Total		31,700	200,000
Gain (Loss) on Extinguishment of Debt, Total		(300)	(3,400)
Extinguishment of Debt Decrease Deferred Financing Costs		400	3,400
Long-Term Debt, Gross		66,952	103,130
Secured Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	3%
Kita Term Loans [Member]
Long-Term Debt, Total		2,500	3,100
Long-Term Debt, Current Maturities, Total		200	200
Long-Term Debt, Gross		$ 2,466	3,070
Kita Term Loans [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage		0.05%			0.05%	0.05%	0.05%
Kita Term Loans [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage		0.43%			0.43%	0.43%	0.43%
Loan Facilities [Member] | Construction Loans [Member]
Debt Instrument, Face Amount | €								€ 10.1
Long-Term Debt, Total		$ 8,400	10,000
Long-Term Debt, Current Maturities, Total		$ 1,000	$ 1,000
First Facility [Member] | Construction Loans [Member]
Debt Instrument, Face Amount | €					€ 3.4
Debt Instrument, Interest Rate, Stated Percentage		0.80%			0.80%	0.80%	0.80%
Debt Instrument, Term (Year)		10 years
Debt Instrument, Collateral Amount | €					€ 3.4
Second Facility [Member] | Construction Loans [Member]
Debt Instrument, Face Amount | €					€ 5.2
Debt Instrument, Interest Rate, Stated Percentage		1.05%			1.05%	1.05%	1.05%
Debt Instrument, Term (Year)		15 years
Debt Instrument, Collateral Amount | €					€ 5.2
Third Facility [Member] | Construction Loans [Member]
Debt Instrument, Interest Rate, Stated Percentage		1.20%			1.20%	1.20%	1.20%
Debt Instrument, Term (Year)		10 years
Debt Instrument, Collateral Amount | €					€ 0.9

Note 3 - Borrowings and Credi_4

Note 3 - Borrowings and Credit Agreements - Summary of Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Lines of credit	$ 1,907	$ 3,059
Total debt	79,739	119,304
Less: financing fees and discount	(764)	(1,514)
Less: current portion	(6,311)	(14,397)
Total long-term debt	72,664	103,393
Secured Term Loan Facility [Member]
Long term Debt	66,952	103,130
Less: current portion	(3,200)	(10,100)
Kita Term Loans [Member]
Long term Debt	2,466	3,070
Less: current portion	(200)	(200)
Construction Loan [Member]
Long term Debt	$ 8,414	$ 10,045

Note 3 - Borrowings and Credi_5

Note 3 - Borrowings and Credit Agreements - Debt Principal Payments for the Next Five Years and Thereafter (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023	$ 6,574
2024	4,672
2025	61,130
2026	1,183
2027	1,189
Thereafter	4,991
Total	$ 79,739

Note 4 - Restructuring Charge_2

Note 4 - Restructuring Charges (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Restructuring Charges, Total	$ 605	$ 1,823	$ 7,623
Integration Program [Member]
Restructuring Charges, Total	$ 200	$ 1,300	$ 11,400

Note 4 - Restructuring Charge_3

Note 4 - Restructuring Charges - Charges Related to the Wind Down Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Costs accrued	$ 605	$ 1,823	$ 7,623
Integration Program [Member]
Restructuring Charges, Total	151	1,265	11,354
Costs accrued	200	1,300	11,400
Employee Severance [Member] | Integration Program [Member]
Restructuring Charges, Total	(8)	1,161	6,485
Accrued restructuring, balance	348	5,826
Costs accrued	(8)	1,161
Amounts paid or charged	(331)	(6,545)
Impact of currency exchange	(9)	(94)
Accrued restructuring, balance	0	348	5,826
Other Restructuring [Member] | Integration Program [Member]
Restructuring Charges, Total	613	662	1,138
Accrued restructuring, balance	0	0
Costs accrued	613	662
Amounts paid or charged	(613)	(662)
Impact of currency exchange	0	0
Accrued restructuring, balance	0	0	0
Employee Severance and Other Exit Costs [Member] | Integration Program [Member]
Accrued restructuring, balance	348	5,826
Costs accrued	605	1,823
Amounts paid or charged	(944)	(7,207)
Impact of currency exchange	(9)	(94)
Accrued restructuring, balance	0	348	5,826
Inventory Charges [Member] | Integration Program [Member]
Restructuring Charges, Total	$ (454)	$ (558)	$ 3,731

Note 5 - Financial Instrument_3

Note 5 - Financial Instruments Measured at Fair Value (Details Textual) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 25, 2021
Debt Securities, Available-for-Sale, Unrealized Loss Position, Amortized Cost	$ 86.3	$ 57
Debt Securities, Available-for-Sale, Unrealized Loss Position, Total	$ 85.5	$ 57

Note 5 - Financial Instrument_4

Note 5 - Financial Instruments Measured at Fair Value - Short-term Investments by Security Type (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 25, 2021
Amortized cost		$ 143,952	$ 89,738
Gross unrealized gains		61	2
Gross unrealized losses	[1]	778	36
Short-term investments		143,235	89,704
Corporate Debt Securities [Member]
Amortized cost	[2]	59,283	84,060
Gross unrealized gains	[2]	30	2
Gross unrealized losses	[1],[2]	240	31
Short-term investments	[2]	59,073	84,031
US Treasury Securities [Member]
Amortized cost		34,614	3,953
Gross unrealized gains		1	0
Gross unrealized losses	[1]	418	5
Short-term investments		34,197	3,948
Certificates of Deposit [Member]
Amortized cost		36,500	800
Gross unrealized gains		20	0
Gross unrealized losses	[1]	41	0
Short-term investments		36,479	800
Asset-Backed Securities [Member]
Amortized cost		12,727
Gross unrealized gains		10
Gross unrealized losses		79
Short-term investments		12,658
Debt Security, Government, Non-US [Member]
Amortized cost		828	925
Gross unrealized gains		0	0
Gross unrealized losses	[1]	0	0
Short-term investments		$ 828	$ 925
[1]As of December 31, 2022, the cost and fair value of investments with loss positions were approximately $86.3 million and $85.5 million, respectively. As of December 25, 2021, the cost and fair value of investments with loss positions was approximately $57.0 million. We evaluated the nature of these investments, credit worthiness of the issuer and the duration of these impairments to determine if an other-than-temporary decline in fair value had occurred and concluded that these losses were temporary and we have the ability and intent to hold these investments to maturity.[2]Corporate debt securities include investments in financial and other corporate institutions. No single issuer represents a significant portion of the total corporate debt securities portfolio.

Note 5 - Financial Instrument_5

Note 5 - Financial Instruments Measured at Fair Value - Effective Maturities of Short-term Investments (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Due in one year or less, amortized cost	$ 112,956
Due in one year or less, fair value	112,683
Due after one year through three years, amortized cost	30,996
Due after one year through three years, fair value	30,552
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	143,952
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	$ 143,235

Note 5 - Financial Instrument_6

Note 5 - Financial Instruments Measured at Fair Value - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)		Dec. 31, 2022	Dec. 25, 2021
Short-term investments		$ 143,235,000	$ 89,704,000
Corporate Debt Securities [Member]
Short-term investments	[1]	59,073,000	84,031,000
Certificates of Deposit [Member]
Short-term investments		36,479,000	800,000
US Treasury Securities [Member]
Short-term investments		34,197,000	3,948,000
Debt Security, Government, Non-US [Member]
Short-term investments		828,000	925,000
Asset-Backed Securities [Member]
Short-term investments		12,658,000
Fair Value, Recurring [Member]
Assets, Fair Value Disclosure, Total		385,576,000	379,905,000
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Short-term investments		69,753,000	86,535,000
Fair Value, Recurring [Member] | Certificates of Deposit [Member]
Short-term investments		37,480,000	800,000
Fair Value, Recurring [Member] | US Treasury Securities [Member]
Short-term investments		34,196,000	3,948,000
Fair Value, Recurring [Member] | Debt Security, Government, Non-US [Member]
Short-term investments		828,000	925,000
Fair Value, Recurring [Member] | Asset-Backed Securities [Member]
Short-term investments		12,658
Fair Value, Recurring [Member] | Cash [Member]
Cash and cash equivalents		190,371,000	195,297,000
Fair Value, Recurring [Member] | Money Market Funds [Member]
Cash and cash equivalents		40,290,000	92,400,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure, Total		190,371,000	195,297,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Certificates of Deposit [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Security, Government, Non-US [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Asset-Backed Securities [Member]
Short-term investments		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Cash [Member]
Cash and cash equivalents		190,371,000	195,297,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
Cash and cash equivalents		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure, Total		195,205,000	184,608,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Short-term investments		69,753,000	86,535,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member]
Short-term investments		37,480,000	800,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Short-term investments		34,196,000	3,948,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Security, Government, Non-US [Member]
Short-term investments		828,000	925,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-Backed Securities [Member]
Short-term investments		12,658
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Cash [Member]
Cash and cash equivalents		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Cash and cash equivalents		40,290,000	92,400,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure, Total		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Certificates of Deposit [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Debt Security, Government, Non-US [Member]
Short-term investments		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-Backed Securities [Member]
Short-term investments		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Cash [Member]
Cash and cash equivalents		0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
Cash and cash equivalents		$ 0	$ 0
[1]Corporate debt securities include investments in financial and other corporate institutions. No single issuer represents a significant portion of the total corporate debt securities portfolio.

Note 6 - Employee Benefit Pla_3

Note 6 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020	May 08, 2019
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	8%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 2,400	$ 2,400	$ 2,300
Deferred Compensation Liability, Current, Total	1,100	1,600
Cash Surrender Value of Life Insurance	$ 1,400	$ 1,800
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 200	$ 8,400	$ 1,300
Restricted Stock Units (RSUs) [Member] | Vesting Over One Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	1 year
Restricted Stock Units (RSUs) [Member] | Vesting Over Two Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	2 years
Restricted Stock Units (RSUs) [Member] | Vesting Over Four Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Equity Based Performance Stock Units Granted in 2020, 2019, 2018, and 2017 [Member] | Vest on the Third Anniversary of Awards Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	100%
Unvested Restricted Stock Units [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 21,600
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 3 months 18 days
Minimum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Available for Issue	0%
Maximum [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Available for Issue	200%
Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan, Shares Reserved for Future Issuance (in shares)		2,650,000
Percentage of Fair Value to Determine Price of Common Stock		85%
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)	160,855	161,351	242,633
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	346,498
Equity Incentive Plan 2005 [Member]
Percentage of Fair Value to Determine Price of Common Stock				100%
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	914,705
Equity Incentive Plan 2005 [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Equity Incentive Plan 2005 [Member] | Minimum [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	1 year
Equity Incentive Plan 2005 [Member] | Maximum [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Postretirement Health Coverage [Member]
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	$ 382	$ 241
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	100
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	100
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	100
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	100
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	600
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total	$ 100		$ 100
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.90%	2.50%	2.10%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	4.40%
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 100
Swiss Plan [Member]
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax	6,800	$ 900
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	6,043	1,179
Defined Benefit Plan, Expected Future Employee and Employer Contributions, Next Twelve Months	900
Defined Benefit Plan, Expected Future Benefit Payment, Year One	1,200
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	1,300
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	1,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	1,200
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	1,300
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	6,800
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total	$ 395	$ 1,228	$ 1,469
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	2.30%	0.20%
Swiss Plan [Member] | Debt Securities and Cash [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	54%
Swiss Plan [Member] | Real Estate Investments [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	23%
Swiss Plan [Member] | Alternative Investments [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	13%
Swiss Plan [Member] | Defined Benefit Plan, Equity Securities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	10%
Pre Age 65 Plan [Member] | Postretirement Health Coverage [Member]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year	6.80%
Defined Benefit Plan, Health Care Cost Trend Rate, Annual Rate of Change	(0.27%)
Post Age 65 Plan [Member] | Postretirement Health Coverage [Member]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year	7.20%
Defined Benefit Plan, Health Care Cost Trend Rate, Annual Rate of Change	(0.31%)

Note 6 - Employee Benefit Pla_4

Note 6 - Employee Benefit Plans - Net Periodic Benefit Cost of Swiss Plan (Details) - Swiss Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Service cost	$ 954	$ 1,223	$ 1,310
Interest cost	56	61	67
Expected return on assets	(128)	(128)	(200)
Settlements	(487)	72	292
Net periodic costs	$ 395	$ 1,228	$ 1,469

Note 6 - Employee Benefit Pla_5

Note 6 - Employee Benefit Plans - Benefit Obligation, Fair Value of Plan Assets, Funded Status and Liability of Swiss Plan (Details) - Swiss Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Benefit obligation at beginning of year	$ (28,765)	$ (31,039)
Service cost	(954)	(1,223)	$ (1,310)
Interest cost	(56)	(61)	(67)
Actuarial gain	6,043	1,179
Participant contributions	(1,459)	(1,780)
Benefits paid	378	436
Plan change	397	1,076
Settlements	2,426	1,653
Foreign currency exchange adjustment	362	994
Benefit obligation at end of year	(21,628)	(28,765)	(31,039)
Fair value of plan assets at beginning of year	18,919	18,756
Return on assets, net of actuarial loss	119	207
Employer contributions	831	878
Participant contributions	1,459	1,780
Benefits paid	(378)	(436)
Settlements	(2,426)	(1,653)
Foreign currency exchange adjustment	(113)	(613)
Fair value of plan assets at end of year	18,411	18,919	$ 18,756
Net liability at end of year	$ (3,217)	$ (9,846)

Note 6 - Employee Benefit Pla_6

Note 6 - Employee Benefit Plans - Weighted-average Actuarial Assumptions to Determine Benefit Obligation and Net Periodic Benefit Cost (Details) - Swiss Plan [Member]	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Discount rate	2.30%	0.20%
Compensation increase	3%	1.50%
Discount rate	2.30%	0.20%	0.20%
Rate of return on assets	1.80%	0.70%	1%
Compensation increase	3%	1.10%	1.10%

Note 6 - Employee Benefit Pla_7

Note 6 - Employee Benefit Plans - Post-retirement Benefit Obligation to Funded Status and Liability (Details) - Postretirement Health Coverage [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Accumulated benefit obligation at beginning of year	$ (2,097)	$ (2,398)
Interest cost	(51)	(49)
Actuarial gain	382	241
Benefits paid	109	109
Accumulated benefit obligation at end of year	(1,657)	(2,097)
Plan assets at end of year	0	0
Funded status	$ (1,657)	$ (2,097)

Note 6 - Employee Benefit Pla_8

Note 6 - Employee Benefit Plans - Stock Option Activity Under Share-based Compensation Plans (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Outstanding and exercisable balance (in shares)	12	262	363
Outstanding and exercisable, weighted average exercise price, balance (in dollars per share)	$ 9.44	$ 10.01	$ 10.27
Exercised, outstanding and exercisable (in shares)	(12)	(250)	(101)
Exercised, weighted average exercise price (in dollars per share)	$ 9.44	$ 10.03	$ 10.95
Outstanding and exercisable balance (in shares)	0	12	262
Outstanding and exercisable, weighted average exercise price, balance (in dollars per share)	$ 0	$ 9.44	$ 10.01

Note 6 - Employee Benefit Pla_9

Note 6 - Employee Benefit Plans - Restricted Stock Unit Activity Under Share-based Compensation Plans (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Outstanding, beginning of year, units (in shares)	1,058	1,414	1,328
Outstanding, beginning of year, wt. avg. (in dollars per share)	$ 21.16	$ 15.16	$ 17.05
Granted, units (in shares)	431	270	779
Granted, wt. avg. (in dollars per share)	$ 27.74	$ 41.66	$ 14.02
Released, units (in shares)	(474)	(579)	(621)
Released, wt. avg. (in dollars per share)	$ 19.94	$ 16.23	$ 17.48
Cancelled, units (in shares)	(46)	(47)	(72)
Cancelled, wt. avg. (in dollars per share)	$ 24.33	$ 18.96	$ 17.59
Outstanding, end of year, units (in shares)	969	1,058	1,414
Outstanding, end of year, wt. avg. (in dollars per share)	$ 24.55	$ 21.16	$ 15.16

Note 6 - Employee Benefit Pl_10

Note 6 - Employee Benefit Plans - Performance Based Stock Unit Activity Under Share-based Compensation Plans (Details) - Equity Based Performance Stock Units [Member] - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Outstanding, beginning of year, units (in shares)	384	425	364
Outstanding, beginning of year, wt. avg. (in dollars per share)	$ 22.22	$ 15.51	$ 18.72
Granted, units (in shares)	151	93	200
Granted, wt. avg. (in dollars per share)	$ 33.22	$ 51.43	$ 13.18
Released, units (in shares)	(55)	(125)	(39)
Released, wt. avg. (in dollars per share)	$ 14.11	$ 21.77	$ 21.40
Cancelled, units (in shares)	(77)	(9)	(100)
Cancelled, wt. avg. (in dollars per share)	$ 15.94	$ 14.04	$ 20.25
Outstanding, end of year, units (in shares)	403	384	425
Outstanding, end of year, wt. avg. (in dollars per share)	$ 28.64	$ 22.22	$ 15.51

Note 6 - Employee Benefit Pl_11

Note 6 - Employee Benefit Plans - Weighted-average Assumptions Used to Value Share-based Awards Granted (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Restricted Stock Units (RSUs) [Member]
Dividend yield	0%	0%	0%
Employee Stock Purchase Plan [Member]
Dividend yield	0%	0%	0.50%
Expected volatility	45.60%	58.30%	67.10%
Risk-free interest rate	1.20%	0.10%	1.10%
Expected term (Year)	6 months	6 months	6 months
Weighted-average grant date fair value per share (in dollars per share)	$ 8.79	$ 9.42	$ 6.01

Note 6 - Employee Benefit Pl_12

Note 6 - Employee Benefit Plans - Reported Share-based Compensation in Consolidated Financial Statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Share-based compensation of continuing operations	$ 14,918	$ 13,792	$ 14,234
Income tax benefit	(4,004)	(722)	(963)
Total share-based compensation, net of tax	10,914	13,070	13,271
Cost of Sales [Member]
Share-based compensation of continuing operations	646	828	893
Research and Development Expense [Member]
Share-based compensation of continuing operations	3,100	3,017	3,245
Selling, General and Administrative Expenses [Member]
Share-based compensation of continuing operations	$ 11,172	$ 9,947	$ 10,096

Note 7 - Derivative Financial_3

Note 7 - Derivative Financial Instruments - Foreign Currency Forward Contracts Outstanding (Details) - Dec. 31, 2022 - Not Designated as Hedging Instrument [Member] € in Thousands, SFr in Thousands, $ in Millions	USD ($)	EUR (€)	CHF (SFr)
Euro Foreign Exchange Forward [Member] | Long [Member]
Contract amount	$ 87.3	€ 81,677
Swiss Franc Foreign Exchange Forward [Member] | Long [Member]
Contract amount	22.5		SFr 20,714
Foreign Exchange Forward [Member]
Contract amount	$ 109.8

Note 7 - Derivative Financial_4

Note 7 - Derivative Financial Instruments - Locations and Amounts of Gains (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Foreign Currency Gain (Loss) [Member] | Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Foreign exchange forward contracts	$ (5,356)	$ (3,428)	$ 756

Note 8 - Equity (Details Textua

Note 8 - Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Mar. 11, 2021	Mar. 11, 2021	Mar. 08, 2021	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020	Oct. 25, 2022	May 04, 2022	May 03, 2022	Oct. 28, 2021
Proceeds from Issuance of Common Stock				$ 0	$ 223,119	$ 0
Stock Repurchase Program, Authorized Amount										$ 70,000
Stock Repurchase Program, Additional Authorized Amount							$ 70,000
Stock Repurchased During Period, Shares (in shares)				1,767,070	206,572
Stock Repurchased During Period, Value				$ 50,700	$ 7,300
Stock Repurchase Program, Remaining Authorized Repurchase Amount				$ 82,000
Common Stock, Shares Authorized (in shares)				90,000,000	90,000,000			90,000,000	60,000,000
Underwritten Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)			4,950,000
Shares Issued, Price Per Share (in dollars per share)			$ 41
Proceeds from Issuance of Common Stock		$ 223,100
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues (in shares)	742,500

Note 9 - Income Taxes (Details

Note 9 - Income Taxes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Deferred Tax Assets, Valuation Allowance	$ 89,234	$ 76,250
Increase (Decrease) of Net Income Due to Impact of Tax Holidays		$ 4,500	$ 3,600
Increase (Decrease) of Earning Per Share Due To Impact Of Tax Holidays (in dollars per share)		$ 0.09	$ 0.09
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	5,800	$ 5,300	$ 5,900
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	600	800
Unrecognized Tax Benefits, Interest Expense, Net of Accrued Interest Reversed	$ (100)	$ (200)	$ (300)
Minimum [Member]
Collection Term Range (Year)	4 years
Maximum [Member]
Collection Term Range (Year)	10 years
Domestic Tax Authority [Member]
Operating Loss Carryforwards	$ 140,000
Tax Credit Carryforward, Amount	3,700
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	113,900
Tax Credit Carryforward, Amount	32,900
Foreign Tax Authority [Member]
Operating Loss Carryforwards	$ 9,000

Note 9 - Income Taxes - Compone

Note 9 - Income Taxes - Components of Provision (Benefit) for Income Taxes for Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
U.S. Federal	$ 1,609	$ 1,103	$ 0
U.S. State	456	101	21
Foreign	31,307	22,862	5,950
Total current	33,372	24,066	5,971
U.S. Federal	(9)	5	8
Foreign	(3,495)	948	(5,313)
Total deferred	(3,504)	953	(5,305)
Income Tax Expense (Benefit), Total	$ 29,868	$ 25,019	$ 666

Note 9 - Income Taxes - Income

Note 9 - Income Taxes - Income (Loss) Before Income Taxes From Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Income (loss) from continuing operations, U.S.	$ 9,180	$ 30,588	$ (25,005)
Income from continuing operations, Foreign	117,535	161,756	11,828
Total	$ 126,715	$ 192,344	$ (13,177)

Note 9 - Income Taxes - Compo_2

Note 9 - Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Inventory, receivable and warranty reserves	$ 13,599	$ 12,166
Net operating loss carryforwards	39,545	44,806
Tax credit carryforwards	29,646	31,264
Capitalized R&D	19,819	8,728
Accrued employee benefits	4,416	5,695
Stock-based compensation	2,990	2,222
Lease liabilities	3,965	4,500
Other	472	2,674
Gross deferred tax assets	114,452	112,055
Less valuation allowance	(89,234)	(76,250)
Total deferred tax assets	25,218	35,805
Intangible assets and other acquisition basis differences	38,921	48,657
Operating lease right-of-use assets	3,573	4,066
Unremitted earnings of foreign subsidiaries	153	4,207
Total deferred tax liabilities	42,647	56,930
Net deferred tax liabilities	(17,429)	(21,125)
Other assets (long-term)	3,930	4,762
Long-term deferred income tax liabilities	$ (21,359)	$ (25,887)

Note 9 - Income Taxes - Reconci

Note 9 - Income Taxes - Reconciliation of Income Tax Computed at U.S. Federal Statutory Tax Rate to Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Tax provision at U.S. 21% statutory rate	$ 26,610	$ 40,392	$ (2,757)
State income taxes, net of federal tax benefit	(1,535)	2,246	(1,160)
Settlements, adjustments and releases from statute expirations	348	(787)	(118)
Federal R&D credits	(1,679)	(943)	(46)
Stock-based compensation	(572)	(4,802)	727
Excess executive compensation	946	1,608	491
Change in valuation allowance	13,307	(9,882)	(1,691)
Exemption of PTG gain	0	(12,378)	0
Dividend, net of foreign tax credits	13	693	1,224
GILTI, net of foreign tax credits	3,458	9,343	4,191
Foreign rate differential	(6,131)	(1,023)	(1,512)
Other, net	(4,897)	552	1,317
Income Tax Expense (Benefit), Total	$ 29,868	$ 25,019	$ 666

Note 9 - Income Taxes - Recon_2

Note 9 - Income Taxes - Reconciliation of Income Tax Computed at U.S. Federal Statutory Tax Rate to Provision (Benefit) (Details) (Parentheticals)	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
U.S. statutory rate	21%	21%	21%

Note 9 - Income Taxes - Recon_3

Note 9 - Income Taxes - Reconciliation of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Balance at beginning of year	$ 33,391	$ 33,696	$ 34,740
Additions for tax positions of current year	910	686	817
Reductions for tax positions of prior years	(428)	(83)	(425)
Reductions due to lapse of the statute of limitations	(354)	(1,012)	(304)
Reductions due to settlements	0	0	(1,134)
Foreign exchange rate impact	(151)
Foreign exchange rate impact		104	2
Balance at end of year	$ 33,368	$ 33,391	$ 33,696

Note 10 - Segment and Geograp_3

Note 10 - Segment and Geographic Information - Summary of Current Segments (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Net sales		$ 812,775	$ 887,214	$ 636,007
Profit (loss) for reportable segments			141,933	4,474
Gain (Loss) on Disposition of Business	[1]	0	70,815	0
Interest expense		(4,177)	(6,413)	(13,759)
Interest income		4,012	239	224
Gain (Loss) on Extinguishment of Debt, Total		(312)	(3,411)	268
Profit (loss) from continuing operations before taxes		126,715	192,344	(13,177)
Total depreciation and amortization		46,016	48,568	52,746
Capital expenditures		14,770	12,000	18,660
Total assets for reportable segments		$ 1,227,414	1,259,044	1,090,346
Discontinued operations				0
Corporate, Non-Segment [Member]
Corporate expenses			(10,819)	(4,384)
Total assets for reportable segments				55,492
Semiconductor Test and Inspection [Member]
Net sales			860,454	585,240
Profit (loss) for reportable segments			138,026	(2,497)
Total depreciation and amortization			48,129	51,548
Capital expenditures			11,954	18,616
Total assets for reportable segments				968,028
PCB Test [Member]
Net sales			26,760	50,767
Profit (loss) for reportable segments			3,907	6,971
Total depreciation and amortization			439	1,198
Capital expenditures			$ 46	44
Total assets for reportable segments				66,826
Semiconductor Test and Inspection and PCB Test [Member]
Total assets for reportable segments				$ 1,034,854
[1]On June 24, 2021 we completed the divestment of our PCB Test business. The divestment of this business did not qualify for presentation as discontinued operations and the results of the PCB Test business are included in continuing operations for all periods presented. See Note 14, “Business Divestitures and Discontinued Operations” for additional information on this transaction and financial statement presentation.

Note 10 - Segment and Geograp_4

Note 10 - Segment and Geographic Information - Customers Comprising 10% of Consolidated Sales (Details)	12 Months Ended
	Dec. 25, 2021
Semiconductor Equipment [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Analog Devices [Member]
Net sales percentage	14.10%

Note 10 - Segment and Geograp_5

Note 10 - Segment and Geographic Information - Summary of Net Sales to Customers, Attributed to Countries (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Net sales	$ 812,775	$ 887,214	$ 636,007
CHINA
Net sales	146,227	213,575	143,360
PHILIPPINES
Net sales	111,647	155,070	56,272
MALAYSIA
Net sales	99,508	79,777	57,893
UNITED STATES
Net sales	79,093	77,495	108,694
TAIWAN
Net sales	59,835	88,152	83,685
Rest of the World [Member]
Net sales	$ 316,465	$ 273,145	$ 186,103

Note 10 - Segment and Geograp_6

Note 10 - Segment and Geographic Information - Summary of Property, Plant and Equipment and Other Long Lived Assets in Geographical Area (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Property plant and equipment, net	$ 65,011	$ 63,957
Goodwill and other intangible assets	353,643	397,111
UNITED STATES
Property plant and equipment, net	18,419	18,375
Goodwill and other intangible assets	131,068	150,477
GERMANY
Property plant and equipment, net	15,977	17,419
Goodwill and other intangible assets	158,401	181,146
PHILIPPINES
Property plant and equipment, net	14,706	10,384
JAPAN
Property plant and equipment, net	9,316	11,156
Goodwill and other intangible assets	2,641	3,148
MALAYSIA
Property plant and equipment, net	4,300	4,082
Goodwill and other intangible assets	43,571	43,611
Rest of the World [Member]
Property plant and equipment, net	2,293	2,541
Goodwill and other intangible assets	1,151	1,156
SINGAPORE
Goodwill and other intangible assets	12,512	12,990
SWITZERLAND
Goodwill and other intangible assets	$ 4,299	$ 4,583

Note 11 - Leases (Details Textu

Note 11 - Leases (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Lessee, Operating Lease, Renewal Term (Year)		25 years
Finance Lease, Right-of-Use Asset, Accumulated Amortization	$ 0.2	$ 0.1
Minimum [Member]
Lessee, Lease, Remaining Term of Contract (Year)	1 year
Maximum [Member]
Lessee, Lease, Remaining Term of Contract (Year)	35 years

Note 11 - Leases - Balance Shee

Note 11 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 25, 2021
Operating lease assets		$ 22,804	$ 25,060
Total lease assets		23,127	25,483
Total lease liabilities		$ 24,185	$ 27,093
Operating leases (Year)		6 years 2 months 12 days	6 years 10 months 24 days
Finance leases (Year)		1 year 8 months 12 days	1 year 9 months 18 days
Operating leases		6.20%	6.30%
Finance leases		2.20%	0.70%
Property, Plant and Equipment, Net [Member]
Finance lease assets	[1]	$ 323	$ 423
Other Accrued Liabilities [Member]
Operating, current		4,927	4,886
Finance, current		49	167
Long-term Lease Liabilities [Member]
Operating, noncurrent		19,185	21,977
Finance, noncurrent		$ 24	$ 63
[1]Finance lease assets are recorded net of accumulated amortization of $0.2 million and $0.1 million in 2022 and 2021, respectively.

Note 11 - Leases - Lease Expens

Note 11 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Operating leases	$ 6,698	$ 7,638
Variable lease expense	2,220	2,192
Short-term operating leases	4	69
Amortization of leased assets	88	86
Interest on lease liabilities	1	2
Sublease income	(69)	(81)
Net lease cost	$ 8,942	$ 9,906

Note 11 - Leases - Future Minim

Note 11 - Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 25, 2021
2023, operating lease	[1]	$ 6,197
2023, finance lease		50
2023, total		6,247
2024, operating lease	[1]	5,848
2024, finance lease		11
2024, total		5,859
2025, operating lease	[1]	5,234
2025, finance lease		11
2025, total		5,245
2026, operating lease		2,849
2026, finance lease		3
2026, total		2,852
2027, operating lease		1,780
2027, finance lease		0
2027, total		1,780
Thereafter, operating leases	[1]	7,904
Thereafter, finance leases		0
Thereafter, total		7,904
Total lease payments, operating leases	[1]	29,812
Total lease payments, finance leases		75
Total lease payments, total		29,887
Less: Interest, operating leases	[1]	(5,700)
Less: Interest, finance leases		(2)
Less: Interest, total		(5,702)
Present value of lease liabilities, finance leases		73
Present value of lease liabilities, total		24,185	$ 27,093
Other Accrued Liabilities and Long-term Lease Liabilities [Member]
Present value of lease liabilities, operating leases	[1]	$ 24,112
[1]Excludes sublease income of $0.1 million in 2022 and 2023.

Note 11 - Leases - Cash Flow In

Note 11 - Leases - Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Operating cash flows from operating leases	$ 6,716	$ 7,628
Operating cash flows from finance leases	1	1
Financing cash flows from finance leases	167	186	$ 146
Leased assets obtained in exchange for new finance lease liabilities	0	54
Leased assets obtained in exchange for new operating lease liabilities	$ 2,874	$ 3,866

Note 13 - Guarantees (Details T

Note 13 - Guarantees (Details Textual) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 25, 2021
Non-current Other Accrued Liabilities [Member]
Product Warranty Accrual, Noncurrent	$ 0.6	$ 1.1

Note 13 - Guarantees - Changes

Note 13 - Guarantees - Changes in Accrued Warranty (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Beginning balance	$ 7,691	$ 6,382	$ 6,155
Warranty accruals	8,897	13,389	6,173
Warranty payments	(10,374)	(11,135)	(5,946)
Warranty liability transferred	0	(945)	0
Ending balance	$ 6,214	$ 7,691	$ 6,382

Note 14 - Business Divestitur_3

Note 14 - Business Divestitures and Discontinued Operations (Details Textual) $ in Thousands			6 Months Ended	12 Months Ended
		Jun. 24, 2021 USD ($)	Dec. 25, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 25, 2021 USD ($)	Dec. 26, 2020 USD ($)
Gain (Loss) on Disposition of Business	[1]			$ 0	$ 70,815	$ 0
Disposal Group, Including Discontinued Operation, Assets, Total						$ 0
Number of Reportable Segments		2		1	1
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | PCB Test Business [Member]
Proceeds from Sales of Business, Affiliate and Productive Assets		$ 125,100
Gain (Loss) on Disposition of Business			$ 70,800
Disposal Group, Including Discontinued Operation, Assets, Total			48,200		$ 48,200
Disposal Group, Including Discontinued Operation, Goodwill			21,900		21,900
Disposal Group, Including Discontinued Operation, Intangible Assets			$ 14,800		$ 14,800
[1]On June 24, 2021 we completed the divestment of our PCB Test business. The divestment of this business did not qualify for presentation as discontinued operations and the results of the PCB Test business are included in continuing operations for all periods presented. See Note 14, “Business Divestitures and Discontinued Operations” for additional information on this transaction and financial statement presentation.

Note 14 - Business Divestitur_4

Note 14 - Business Divestitures and Discontinued Operations - Summary of Operating Results (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Net sales			$ 432
Operating income			11
Gain on sale of FSG			35
Income before taxes			46
Income tax provision			4
Income, net of tax	$ 0	$ 0	$ 42

Note 15 - Accumulated Other C_3

Note 15 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Foreign currency translation adjustments, before tax	$ (17,991)	$ (22,859)	$ 27,321
Foreign currency translation adjustments, tax	41	(97)	0
Foreign currency translation adjustments, net of tax	(17,950)	(22,956)	27,321
Adjustments related to postretirement benefits, before tax	6,690	2,920	2,599
Adjustments related to postretirement benefits, tax	(796)	(318)	(216)
Adjustments related to postretirement benefits, net of tax	5,894	2,602	2,383
Other comprehensive income (loss), before tax	(11,995)	(22,521)	29,920
Other comprehensive income (loss), tax	(755)	(415)	(216)
Other comprehensive income (loss), net of tax	(12,750)	(22,936)	29,704
Change in unrealized gain/loss on investments, before tax	(694)	(67)
Change in unrealized gain/loss on investments, tax	0	0
Change in unrealized gain/loss on investments, net of tax	(694)	(67)	0
Reclassification due to sale of PBC Test Business, before tax		(2,515)
Reclassification due to sale of PBC Test Business, tax		0
Reclassification due to sale of PBC Test Business, net of tax	0	(2,515)	0
Foreign currency translation adjustments, before tax	$ (17,991)	$ (22,859)	$ 27,321

Note 15 - Accumulated Other C_4

Note 15 - Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Total accumulated other comprehensive loss	$ (40,012)	$ (27,262)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated net currency translation adjustments	(46,308)	(25,833)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated net adjustments related to postretirement benefits	7,031	1,153
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Accumulated net unrealized gain/loss on investments	(735)	(67)
AOCI, Accumulated Reclassification, Sale of Business [Member]
Accumulated reclassification due to sale of PBC Test Business	0	(2,515)
AOCI Attributable to Parent [Member]
Total accumulated other comprehensive loss	$ (40,012)	$ (27,262)

Note 16 - Related Party Trans_2

Note 16 - Related Party Transactions (Details Textual)	Dec. 31, 2022
Blackrock [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	15.90%

Note 17 - Subsequent Event (Det

Note 17 - Subsequent Event (Details Textual) - MCT Worldwide, LLC [Member] - USD ($) $ in Millions		12 Months Ended
	Jan. 30, 2023	Dec. 31, 2022
Business Combination, Acquisition Related Costs		$ 0.1
Subsequent Event [Member]
Payments to Acquire Businesses, Gross	$ 28

Schedule II - Valuation and Q_3

Schedule II - Valuation and Qualifying Accounts (Details Textual) $ in Millions	Dec. 25, 2021 USD ($)
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | PCB Test Business Sale [Member]
Reserve for excess and obsolete inventories not charged to expense PCB Test sale	$ 2.2

Schedule II - Valuation and Q_4

Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022		Dec. 25, 2021	Dec. 26, 2020
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance, beginning of year		$ 290		$ 128	$ 9
Additions (reductions) not charged to expense	[1]	(8)		14	(1)
Additions (reduction) charged (credited) to expense		122		149	79
Deductions/write-offs		205		1	(41)
Balance, end of year		199		290	128
SEC Schedule, 12-09, Reserve, Inventory [Member]
Balance, beginning of year		23,012		26,937	20,958
Additions (reductions) not charged to expense	[1]	698	[2]	(2,926)	4,611
Additions (reduction) charged (credited) to expense		7,179		7,102	8,117
Deductions/write-offs		4,018		8,101	6,749
Balance, end of year		$ 26,871		$ 23,012	$ 26,937
[1]Changes in reserve balances resulting from foreign currency impact and reclassifications from other reserves.[2]Reductions not charged to expense includes $2,206 transferred as part of the sale of our PCB Test business.